des_ecb_pkcs7_examples/

des_ecb_pkcs7_examples.rs

// Copyright 2025 PARK Youngho.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.
// This file may not be copied, modified, or distributed
// except according to those terms.

#![allow(missing_docs)]
#![allow(unused_must_use)]
#![allow(dead_code)]
#![allow(unused_imports)]
#![allow(non_snake_case)]


// use std::io::Write;

// #![allow(missing_docs)]
// #![allow(rustdoc::missing_doc_code_examples)]
// #[allow(non_camel_case_types)]
// #[allow(dead_code)]
pub fn main()
{
    des_encrypt_with_padding_pkcs7_ecb();
    des_encrypt_with_padding_pkcs7_ecb_into_vec();
    des_encrypt_with_padding_pkcs7_ecb_into_array();
    des_encrypt_str_with_padding_pkcs7_ecb();
    des_encrypt_str_with_padding_pkcs7_ecb_into_vec();
    des_encrypt_str_with_padding_pkcs7_ecb_into_array();
    des_encrypt_string_with_padding_pkcs7_ecb();
    des_encrypt_string_with_padding_pkcs7_ecb_into_vec();
    des_encrypt_string_with_padding_pkcs7_ecb_into_array();
    des_encrypt_vec_with_padding_pkcs7_ecb();
    des_encrypt_vec_with_padding_pkcs7_ecb_into_vec();
    des_encrypt_vec_with_padding_pkcs7_ecb_into_array();
    des_encrypt_array_with_padding_pkcs7_ecb();
    des_encrypt_array_with_padding_pkcs7_ecb_into_vec();
    des_encrypt_array_with_padding_pkcs7_ecb_into_array();

    des_decrypt_with_padding_pkcs7_ecb();
    des_decrypt_with_padding_pkcs7_ecb_into_vec();
    des_decrypt_with_padding_pkcs7_ecb_into_array();
    des_decrypt_with_padding_pkcs7_ecb_into_string();
    des_decrypt_vec_with_padding_pkcs7_ecb();
    des_decrypt_vec_with_padding_pkcs7_ecb_into_vec();
    des_decrypt_vec_with_padding_pkcs7_ecb_into_array();
    des_decrypt_vec_with_padding_pkcs7_ecb_into_string();
    des_decrypt_array_with_padding_pkcs7_ecb();
    des_decrypt_array_with_padding_pkcs7_ecb_into_vec();
    des_decrypt_array_with_padding_pkcs7_ecb_into_array();
    des_decrypt_array_with_padding_pkcs7_ecb_into_string();
}

fn des_encrypt_with_padding_pkcs7_ecb()
{
    println!("des_encrypt_with_padding_pkcs7_ecb()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt(message.as_ptr(), message.len() as u64, cipher.as_mut_ptr());
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt(message.as_ptr(), message.len() as u64, cipher.as_mut_ptr());
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt(message.as_ptr(), message.len() as u64, cipher1.as_mut_ptr());
    d_des.encrypt(message.as_ptr(), message.len() as u64, cipher2.as_mut_ptr());
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt(message.as_ptr(), message.len() as u64, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt(message.as_ptr(), message.len() as u64, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt(message.as_ptr(), message.len() as u64, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt(message.as_ptr(), message.len() as u64, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 24];
    a_des.encrypt(message.as_ptr(), message.len() as u64, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_with_padding_pkcs7_ecb_into_vec()
{
    println!("des_encrypt_with_padding_pkcs7_ecb_into_vec()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_into_vec(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_into_vec(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);
    println!("K =\t{:#016X}", key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_into_vec(message.as_ptr(), message.len() as u64, &mut cipher1);
    d_des.encrypt_into_vec(message.as_ptr(), message.len() as u64, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_into_vec(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_into_vec(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_into_vec(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_into_vec(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_into_vec(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_with_padding_pkcs7_ecb_into_array()
{
    println!("des_encrypt_with_padding_pkcs7_ecb_into_array()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher1);
    d_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 24];
    a_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_str_with_padding_pkcs7_ecb()
{
    println!("des_encrypt_str_with_padding_pkcs7_ecb()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_str(&message, cipher.as_mut_ptr());
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_str(&message, cipher.as_mut_ptr());
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_str(&message, cipher1.as_mut_ptr());
    d_des.encrypt_str(&message, cipher2.as_mut_ptr());
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_str(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_str(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_str(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_str(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 24];
    a_des.encrypt_str(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_str_with_padding_pkcs7_ecb_into_vec()
{
    println!("des_encrypt_str_with_padding_pkcs7_ecb_into_vec()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_str_into_vec(&message, &mut cipher1);
    d_des.encrypt_str_into_vec(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_str_with_padding_pkcs7_ecb_into_array()
{
    println!("des_encrypt_str_with_padding_pkcs7_ecb_into_array()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_str_into_array(&message, &mut cipher1);
    d_des.encrypt_str_into_array(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 24];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_string_with_padding_pkcs7_ecb()
{
    println!("des_encrypt_string_with_padding_pkcs7_ecb()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_string(&message, cipher.as_mut_ptr());
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_string(&message, cipher.as_mut_ptr());
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.".to_string();
    println!("M =\t{}", message);
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_string(&message, cipher1.as_mut_ptr());
    d_des.encrypt_string(&message, cipher2.as_mut_ptr());
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_string(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_string(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_string(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_string(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 24];
    a_des.encrypt_string(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_string_with_padding_pkcs7_ecb_into_vec()
{
    println!("des_encrypt_string_with_padding_pkcs7_ecb_into_vec()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.".to_string();
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_string_into_vec(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.".to_string();
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_string_into_vec(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.".to_string();
    println!("M =\t{}", message);
    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_string_into_vec(&message, &mut cipher1);
    d_des.encrypt_string_into_vec(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "".to_string();
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_string_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes".to_string();
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_string_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.".to_string();
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_string_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho".to_string();
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_string_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.".to_string();
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_string_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_string_with_padding_pkcs7_ecb_into_array()
{
    println!("des_encrypt_string_with_padding_pkcs7_ecb_into_array()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_string_into_array(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_string_into_array(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.".to_string();
    println!("M =\t{}", message);
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_string_into_array(&message, &mut cipher1);
    d_des.encrypt_string_into_array(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_string_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_string_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_string_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_string_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.".to_string();
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 24];
    a_des.encrypt_string_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_vec_with_padding_pkcs7_ecb()
{
    println!("des_encrypt_vec_with_padding_pkcs7_ecb()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 56];
    a_des.encrypt_vec(&message, cipher.as_mut_ptr());
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 56];
    a_des.encrypt_vec(&message, cipher.as_mut_ptr());
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K1 =\t{:#016X}", key1);
    println!("K2 =\t{:#016X}", key2);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_vec(&message, cipher1.as_mut_ptr());
    d_des.encrypt_vec(&message, cipher2.as_mut_ptr());
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 8];
    a_des.encrypt_vec(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 8];
    a_des.encrypt_vec(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 16];
    a_des.encrypt_vec(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 16];
    a_des.encrypt_vec(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 24];
    a_des.encrypt_vec(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_vec_with_padding_pkcs7_ecb_into_vec()
{
    println!("des_encrypt_vec_with_padding_pkcs7_ecb_into_vec()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_vec_into_vec(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_vec_into_vec(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K1 =\t{:#016X}", key1);
    println!("K2 =\t{:#016X}", key2);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };

    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_vec_into_vec(&message, &mut cipher1);
    d_des.encrypt_vec_into_vec(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_vec_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_vec_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_vec_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_vec_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_vec_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_vec_with_padding_pkcs7_ecb_into_array()
{
    println!("des_encrypt_vec_with_padding_pkcs7_ecb_into_array()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 56];
    a_des.encrypt_vec_into_array(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 56];
    a_des.encrypt_vec_into_array(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K1 =\t{:#016X}", key1);
    println!("K2 =\t{:#016X}", key2);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_vec_into_array(&message, &mut cipher1);
    d_des.encrypt_vec_into_array(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 8];
    a_des.encrypt_vec_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 8];
    a_des.encrypt_vec_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 16];
    a_des.encrypt_vec_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 16];
    a_des.encrypt_vec_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);
 
    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let message = unsafe { message.to_string().as_mut_vec().clone() };
    let mut cipher = [0_u8; 24];
    a_des.encrypt_vec_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_array_with_padding_pkcs7_ecb()
{
    println!("des_encrypt_array_with_padding_pkcs7_ecb()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 55];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 56];
    a_des.encrypt_array(&message, cipher.as_mut_ptr());
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let mes = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 55];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 56];
    a_des.encrypt_array(&message, cipher.as_mut_ptr());
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K1 =\t{:#016X}", key1);
    println!("K2 =\t{:#016X}", key2);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let mes = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 55];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_array(&message, cipher1.as_mut_ptr());
    d_des.encrypt_array(&message, cipher2.as_mut_ptr());
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 0];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 8];
    a_des.encrypt_array(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "7 bytes";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 7];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 8];
    a_des.encrypt_array(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "I am OK.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 8];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 16];
    a_des.encrypt_array(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "PARK Youngho";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 12];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 16];
    a_des.encrypt_array(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "고맙습니다.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 16];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 24];
    a_des.encrypt_array(&message, cipher.as_mut_ptr());
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_array_with_padding_pkcs7_ecb_into_vec()
{
    println!("des_encrypt_array_with_padding_pkcs7_ecb_into_vec()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 55];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_array_into_vec(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let mes = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 55];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_array_into_vec(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K1 =\t{:#016X}", key1);
    println!("K2 =\t{:#016X}", key2);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let mes = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 55];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });

    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_array_into_vec(&message, &mut cipher1);
    d_des.encrypt_array_into_vec(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 0];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_array_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "7 bytes";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 7];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_array_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "I am OK.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 8];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_array_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "PARK Youngho";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 12];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_array_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "고맙습니다.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 16];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_array_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_encrypt_array_with_padding_pkcs7_ecb_into_array()
{
    println!("des_encrypt_array_with_padding_pkcs7_ecb_into_array()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 55];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 56];
    a_des.encrypt_array_into_array(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let mes = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 55];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 56];
    a_des.encrypt_array_into_array(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K1 =\t{:#016X}", key1);
    println!("K2 =\t{:#016X}", key2);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let mes = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 55];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_array_into_array(&message, &mut cipher1);
    d_des.encrypt_array_into_array(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 0];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 8];
    a_des.encrypt_array_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "7 bytes";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 7];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 8];
    a_des.encrypt_array_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "I am OK.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 8];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 16];
    a_des.encrypt_array_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let mes = "PARK Youngho";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 12];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 16];
    a_des.encrypt_array_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);
 
    let mes = "고맙습니다.";
    println!("M =\t{}", mes);
    let mut message = [0_u8; 16];
    message.copy_from_slice(unsafe { mes.to_string().as_mut_vec() });
    let mut cipher = [0_u8; 24];
    a_des.encrypt_array_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");
    println!("-------------------------------");
}

fn des_decrypt_with_padding_pkcs7_ecb()
{
    println!("des_decrypt_with_padding_pkcs7_ecb()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");

    let mut recovered = vec![0; 55];
    a_des.decrypt(cipher.as_ptr(), cipher.len() as u64, recovered.as_mut_ptr());
    print!("Ba (16 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb (16 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");

    let mut recovered = vec![0; 55];
    a_des.decrypt(cipher.as_ptr(), cipher.len() as u64, recovered.as_mut_ptr());
    print!("Ba (128 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb (128 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_str_into_vec(&message, &mut cipher1);
    d_des.encrypt_str_into_vec(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");

    let mut recovered1 = vec![0; 55];
    let mut recovered2 = vec![0; 55];
    c_des.decrypt(cipher1.as_ptr(), cipher1.len() as u64, recovered1.as_mut_ptr());
    d_des.decrypt(cipher2.as_ptr(), cipher2.len() as u64, recovered2.as_mut_ptr());
    print!("B1a (0 rounds) =\t");
    for b in recovered1.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");
    print!("B2a (0 rounds) =\t");
    for b in recovered2.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted1 = String::new();
    let mut converted2 = String::new();
    unsafe { converted1.as_mut_vec() }.append(&mut recovered1);
    unsafe { converted2.as_mut_vec() }.append(&mut recovered2);
    
    println!("B1b (0 rounds) =\t{}", converted1);
    assert_eq!(converted1, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted1, message);
    println!("B2b (0 rounds) =\t{}", converted2);
    assert_eq!(converted2, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted2, message);
    assert_eq!(converted1, converted1);
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");

    let mut recovered = vec![0; 8];
    let len = a_des.decrypt(cipher.as_ptr(), cipher.len() as u64, recovered.as_mut_ptr());
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    converted.truncate(len as usize);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    
    let mut recovered = vec![0; 8];
    let len = a_des.decrypt(cipher.as_ptr(), cipher.len() as u64, recovered.as_mut_ptr());
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "37 20 62 79 74 65 73 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    converted.truncate(len as usize);

    println!("Bb =\t{}", converted);
    assert_eq!(converted, "7 bytes");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    
    let mut recovered = vec![0; 16];
    let len = a_des.decrypt(cipher.as_ptr(), cipher.len() as u64, recovered.as_mut_ptr());
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 20 61 6D 20 4F 4B 2E 00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    converted.truncate(len as usize);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "I am OK.");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");

    let mut recovered = vec![0; 16];
    let len = a_des.decrypt(cipher.as_ptr(), cipher.len() as u64, recovered.as_mut_ptr());
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "50 41 52 4B 20 59 6F 75 6E 67 68 6F 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    converted.truncate(len as usize);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "PARK Youngho");
    assert_eq!(converted, message);
    println!();


    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = vec![0; 24];
    let len = a_des.decrypt(cipher.as_ptr(), cipher.len() as u64, recovered.as_mut_ptr());
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "EA B3 A0 EB A7 99 EC 8A B5 EB 8B 88 EB 8B A4 2E 00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    converted.truncate(len as usize);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "고맙습니다.");
    assert_eq!(converted, message);
    println!("-------------------------------");
}

fn des_decrypt_with_padding_pkcs7_ecb_into_vec()
{
    println!("des_decrypt_with_padding_pkcs7_ecb_into_vec()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_into_vec(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    print!("Ba (16 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb (16 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_into_vec(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    print!("Ba (128 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb (128 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_str_into_vec(&message, &mut cipher1);
    d_des.encrypt_str_into_vec(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");

    let mut recovered1 = Vec::<u8>::new();
    let mut recovered2 = Vec::<u8>::new();
    c_des.decrypt_into_vec(cipher1.as_ptr(), cipher1.len() as u64, &mut recovered1);
    d_des.decrypt_into_vec(cipher2.as_ptr(), cipher2.len() as u64, &mut recovered2);
    print!("B1a (0 rounds) =\t");
    for b in recovered1.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");
    print!("B2a (0 rounds) =\t");
    for b in recovered2.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted1 = String::new();
    let mut converted2 = String::new();
    unsafe { converted1.as_mut_vec() }.append(&mut recovered1);
    unsafe { converted2.as_mut_vec() }.append(&mut recovered2);
    
    println!("B1b (0 rounds) =\t{}", converted1);
    assert_eq!(converted1, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted1, message);
    println!("B2b (0 rounds) =\t{}", converted2);
    assert_eq!(converted2, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted2, message);
    assert_eq!(converted1, converted1);
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_into_vec(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    
    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_into_vec(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "37 20 62 79 74 65 73 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "7 bytes");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    
    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_into_vec(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 20 61 6D 20 4F 4B 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "I am OK.");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_into_vec(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "50 41 52 4B 20 59 6F 75 6E 67 68 6F ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "PARK Youngho");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_into_vec(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "EA B3 A0 EB A7 99 EC 8A B5 EB 8B 88 EB 8B A4 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "고맙습니다.");
    assert_eq!(converted, message);
    println!("-------------------------------");
}

fn des_decrypt_with_padding_pkcs7_ecb_into_array()
{
    println!("des_decrypt_with_padding_pkcs7_ecb_into_array()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");

    let mut recovered = [0u8; 56];
    let len = a_des.decrypt_into_array(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    print!("Ba (16 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb (16 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");

    let mut recovered = [0u8; 56];
    let len = a_des.decrypt_into_array(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    print!("Ba (16 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb (16 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_str_into_vec(&message, &mut cipher1);
    d_des.encrypt_str_into_vec(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");

    let mut recovered1 = [0u8; 56];
    let mut recovered2 = [0u8; 56];
    let len1 = c_des.decrypt_into_array(cipher1.as_ptr(), cipher1.len() as u64, &mut recovered1);
    let len2 = d_des.decrypt_into_array(cipher2.as_ptr(), cipher2.len() as u64, &mut recovered2);
    print!("B1a (0 rounds) =\t");
    for b in recovered1.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E 00 ");
    print!("B2a (0 rounds) =\t");
    for b in recovered2.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E 00 ");

    let mut converted1 = String::new();
    let mut converted2 = String::new();
    unsafe { converted1.as_mut_vec() }.write(&recovered1);
    unsafe { converted2.as_mut_vec() }.write(&recovered2);
    unsafe { converted1.as_mut_vec() }.truncate(len1 as usize);
    unsafe { converted2.as_mut_vec() }.truncate(len2 as usize);
    println!("B1b (0 rounds) =\t{}", converted1);
    println!("B2b (0 rounds) =\t{}", converted2);
    assert_eq!(converted1, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted2, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted1, message);
    assert_eq!(converted2, message);
    assert_eq!(converted1, converted2);
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");

    let mut recovered = [0u8; 8];
    let len = a_des.decrypt_into_array(cipher.as_ptr(), cipher.len() as u64, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");

    let mut recovered = [0u8; 8];
    let len = a_des.decrypt_into_array(cipher.as_ptr(), cipher.len() as u64, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "37 20 62 79 74 65 73 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "7 bytes");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = [0u8; 16];
    let len = a_des.decrypt_into_array(cipher.as_ptr(), cipher.len() as u64, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 20 61 6D 20 4F 4B 2E 00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "I am OK.");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");

    let mut recovered = [0u8; 16];
    let len = a_des.decrypt_into_array(cipher.as_ptr(), cipher.len() as u64, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "50 41 52 4B 20 59 6F 75 6E 67 68 6F 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "PARK Youngho");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = [0u8; 24];
    let len = a_des.decrypt_into_array(cipher.as_ptr(), cipher.len() as u64, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "EA B3 A0 EB A7 99 EC 8A B5 EB 8B 88 EB 8B A4 2E 00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "고맙습니다.");
    assert_eq!(converted, message);
    println!("-------------------------------");
}

fn des_decrypt_with_padding_pkcs7_ecb_into_string()
{
    println!("des_decrypt_with_padding_pkcs7_ecb_into_string()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");

    let mut recovered = String::new();
    a_des.decrypt_into_string(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    println!("B (16 rounds) =\t{}", recovered);
    assert_eq!(recovered, "In the beginning God created the heavens and the earth.");
    assert_eq!(recovered, message);
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");

    let mut recovered = String::new();
    a_des.decrypt_into_string(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    println!("B (128 rounds) =\t{}", recovered);
    assert_eq!(recovered, "In the beginning God created the heavens and the earth.");
    assert_eq!(recovered, message);
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_str_into_vec(&message, &mut cipher1);
    d_des.encrypt_str_into_vec(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");

    let mut recovered1 = String::new();
    let mut recovered2 = String::new();
    c_des.decrypt_into_string(cipher1.as_ptr(), cipher1.len() as u64, &mut recovered1);
    d_des.decrypt_into_string(cipher2.as_ptr(), cipher2.len() as u64, &mut recovered2);
    println!("B1 (0 rounds) =\t{}", recovered1);
    println!("B2 (0 rounds) =\t{}", recovered2);
    assert_eq!(recovered1, "In the beginning God created the heavens and the earth.");
    assert_eq!(recovered2, "In the beginning God created the heavens and the earth.");
    assert_eq!(recovered1, message);
    assert_eq!(recovered2, message);
    assert_eq!(recovered1, recovered2);
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");

    let mut recovered = String::new();
    a_des.decrypt_into_string(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "");
    assert_eq!(recovered, message);
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");

    let mut recovered = String::new();
    a_des.decrypt_into_string(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "7 bytes");
    assert_eq!(recovered, message);
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = String::new();
    a_des.decrypt_into_string(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "I am OK.");
    assert_eq!(recovered, message);
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");

    let mut recovered = String::new();
    a_des.decrypt_into_string(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "PARK Youngho");
    assert_eq!(recovered, message);
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = String::new();
    a_des.decrypt_into_string(cipher.as_ptr(), cipher.len() as u64, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "고맙습니다.");
    assert_eq!(recovered, message);
    println!("-------------------------------");
}

fn des_decrypt_vec_with_padding_pkcs7_ecb()
{
    println!("des_decrypt_vec_with_padding_pkcs7_ecb()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");

    let mut recovered = vec![0; 55];
    a_des.decrypt_vec(&cipher, recovered.as_mut_ptr());
    print!("Ba (16 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb (16 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");

    let mut recovered = vec![0; 55];
    a_des.decrypt_vec(&cipher, recovered.as_mut_ptr());
    print!("Ba (128 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb (128 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_str_into_vec(&message, &mut cipher1);
    d_des.encrypt_str_into_vec(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");

    let mut recovered1 = vec![0; 55];
    let mut recovered2 = vec![0; 55];
    c_des.decrypt_vec(&cipher1, recovered1.as_mut_ptr());
    d_des.decrypt_vec(&cipher2, recovered2.as_mut_ptr());
    print!("B1a (0 rounds) =\t");
    for b in recovered1.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");
    print!("B2a (0 rounds) =\t");
    for b in recovered2.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted1 = String::new();
    let mut converted2 = String::new();
    unsafe { converted1.as_mut_vec() }.append(&mut recovered1);
    unsafe { converted2.as_mut_vec() }.append(&mut recovered2);
    
    println!("B1b (0 rounds) =\t{}", converted1);
    assert_eq!(converted1, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted1, message);
    println!("B2b (0 rounds) =\t{}", converted2);
    assert_eq!(converted2, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted2, message);
    assert_eq!(converted1, converted1);
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");

    let mut recovered = vec![0; 8];
    let len = a_des.decrypt_vec(&cipher, recovered.as_mut_ptr());
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    converted.truncate(len as usize);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    
    let mut recovered = vec![0; 8];
    let len = a_des.decrypt_vec(&cipher, recovered.as_mut_ptr());
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "37 20 62 79 74 65 73 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    converted.truncate(len as usize);

    println!("Bb =\t{}", converted);
    assert_eq!(converted, "7 bytes");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    
    let mut recovered = vec![0; 16];
    let len = a_des.decrypt_vec(&cipher, recovered.as_mut_ptr());
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 20 61 6D 20 4F 4B 2E 00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    converted.truncate(len as usize);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "I am OK.");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");

    let mut recovered = vec![0; 16];
    let len = a_des.decrypt_vec(&cipher, recovered.as_mut_ptr());
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "50 41 52 4B 20 59 6F 75 6E 67 68 6F 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    converted.truncate(len as usize);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "PARK Youngho");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = vec![0; 24];
    let len = a_des.decrypt_vec(&cipher, recovered.as_mut_ptr());
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "EA B3 A0 EB A7 99 EC 8A B5 EB 8B 88 EB 8B A4 2E 00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    converted.truncate(len as usize);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "고맙습니다.");
    assert_eq!(converted, message);
    println!("-------------------------------");
}

fn des_decrypt_vec_with_padding_pkcs7_ecb_into_vec()
{
    println!("des_decrypt_vec_with_padding_pkcs7_ecb_into_vec()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_vec_into_vec(&cipher, &mut recovered);
    print!("Ba (16 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb (16 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_vec_into_vec(&cipher, &mut recovered);
    print!("Ba (128 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb (128 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_str_into_vec(&message, &mut cipher1);
    d_des.encrypt_str_into_vec(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");

    let mut recovered1 = Vec::<u8>::new();
    let mut recovered2 = Vec::<u8>::new();
    c_des.decrypt_vec_into_vec(&cipher1, &mut recovered1);
    d_des.decrypt_vec_into_vec(&cipher2, &mut recovered2);
    print!("B1a (0 rounds) =\t");
    for b in recovered1.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");
    print!("B2a (0 rounds) =\t");
    for b in recovered2.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted1 = String::new();
    let mut converted2 = String::new();
    unsafe { converted1.as_mut_vec() }.append(&mut recovered1);
    unsafe { converted2.as_mut_vec() }.append(&mut recovered2);
    
    println!("B1b (0 rounds) =\t{}", converted1);
    assert_eq!(converted1, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted1, message);
    println!("B2b (0 rounds) =\t{}", converted2);
    assert_eq!(converted2, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted2, message);
    assert_eq!(converted1, converted1);
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_vec_into_vec(&cipher, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    
    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_vec_into_vec(&cipher, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "37 20 62 79 74 65 73 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "7 bytes");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    
    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_vec_into_vec(&cipher, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 20 61 6D 20 4F 4B 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "I am OK.");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_vec_into_vec(&cipher, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "50 41 52 4B 20 59 6F 75 6E 67 68 6F ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "PARK Youngho");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_vec_into_vec(&cipher, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "EA B3 A0 EB A7 99 EC 8A B5 EB 8B 88 EB 8B A4 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "고맙습니다.");
    assert_eq!(converted, message);
    println!("-------------------------------");
}

fn des_decrypt_vec_with_padding_pkcs7_ecb_into_array()
{
    println!("des_decrypt_vec_with_padding_pkcs7_ecb_into_array()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");

    let mut recovered = [0u8; 56];
    let len = a_des.decrypt_vec_into_array(&cipher, &mut recovered);
    print!("Ba (16 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb (16 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");

    let mut recovered = [0u8; 56];
    let len = a_des.decrypt_vec_into_array(&cipher, &mut recovered);
    print!("Ba (16 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb (16 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_str_into_vec(&message, &mut cipher1);
    d_des.encrypt_str_into_vec(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");

    let mut recovered1 = [0u8; 56];
    let mut recovered2 = [0u8; 56];
    let len1 = c_des.decrypt_vec_into_array(&cipher1, &mut recovered1);
    let len2 = d_des.decrypt_vec_into_array(&cipher2, &mut recovered2);
    print!("B1a (0 rounds) =\t");
    for b in recovered1.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E 00 ");
    print!("B2a (0 rounds) =\t");
    for b in recovered2.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E 00 ");

    let mut converted1 = String::new();
    let mut converted2 = String::new();
    unsafe { converted1.as_mut_vec() }.write(&recovered1);
    unsafe { converted2.as_mut_vec() }.write(&recovered2);
    unsafe { converted1.as_mut_vec() }.truncate(len1 as usize);
    unsafe { converted2.as_mut_vec() }.truncate(len2 as usize);
    println!("B1b (0 rounds) =\t{}", converted1);
    println!("B2b (0 rounds) =\t{}", converted2);
    assert_eq!(converted1, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted2, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted1, message);
    assert_eq!(converted2, message);
    assert_eq!(converted1, converted2);
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");

    let mut recovered = [0u8; 8];
    let len = a_des.decrypt_vec_into_array(&cipher, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");

    let mut recovered = [0u8; 8];
    let len = a_des.decrypt_vec_into_array(&cipher, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "37 20 62 79 74 65 73 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "7 bytes");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = [0u8; 16];
    let len = a_des.decrypt_vec_into_array(&cipher, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 20 61 6D 20 4F 4B 2E 00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "I am OK.");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");

    let mut recovered = [0u8; 16];
    let len = a_des.decrypt_vec_into_array(&cipher, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "50 41 52 4B 20 59 6F 75 6E 67 68 6F 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "PARK Youngho");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = [0u8; 24];
    let len = a_des.decrypt_vec_into_array(&cipher, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "EA B3 A0 EB A7 99 EC 8A B5 EB 8B 88 EB 8B A4 2E 00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "고맙습니다.");
    assert_eq!(converted, message);
    println!("-------------------------------");
}

fn des_decrypt_vec_with_padding_pkcs7_ecb_into_string()
{
    println!("des_decrypt_vec_with_padding_pkcs7_ecb_into_string()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");

    let mut recovered = String::new();
    a_des.decrypt_vec_into_string(&cipher, &mut recovered);
    println!("B (16 rounds) =\t{}", recovered);
    assert_eq!(recovered, "In the beginning God created the heavens and the earth.");
    assert_eq!(recovered, message);
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");

    let mut recovered = String::new();
    a_des.decrypt_vec_into_string(&cipher, &mut recovered);
    println!("B (128 rounds) =\t{}", recovered);
    assert_eq!(recovered, "In the beginning God created the heavens and the earth.");
    assert_eq!(recovered, message);
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = Vec::<u8>::new();
    let mut cipher2 = Vec::<u8>::new();
    c_des.encrypt_str_into_vec(&message, &mut cipher1);
    d_des.encrypt_str_into_vec(&message, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");

    let mut recovered1 = String::new();
    let mut recovered2 = String::new();
    c_des.decrypt_vec_into_string(&cipher1, &mut recovered1);
    d_des.decrypt_vec_into_string(&cipher2, &mut recovered2);
    println!("B1 (0 rounds) =\t{}", recovered1);
    println!("B2 (0 rounds) =\t{}", recovered2);
    assert_eq!(recovered1, "In the beginning God created the heavens and the earth.");
    assert_eq!(recovered2, "In the beginning God created the heavens and the earth.");
    assert_eq!(recovered1, message);
    assert_eq!(recovered2, message);
    assert_eq!(recovered1, recovered2);
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");

    let mut recovered = String::new();
    a_des.decrypt_vec_into_string(&cipher, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "");
    assert_eq!(recovered, message);
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");

    let mut recovered = String::new();
    a_des.decrypt_vec_into_string(&cipher, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "7 bytes");
    assert_eq!(recovered, message);
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = String::new();
    a_des.decrypt_vec_into_string(&cipher, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "I am OK.");
    assert_eq!(recovered, message);
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");

    let mut recovered = String::new();
    a_des.decrypt_vec_into_string(&cipher, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "PARK Youngho");
    assert_eq!(recovered, message);
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = Vec::<u8>::new();
    a_des.encrypt_str_into_vec(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = String::new();
    a_des.decrypt_vec_into_string(&cipher, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "고맙습니다.");
    assert_eq!(recovered, message);
    println!("-------------------------------");
}

fn des_decrypt_array_with_padding_pkcs7_ecb()
{
    println!("des_decrypt_array_with_padding_pkcs7_ecb()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");

    let mut recovered = vec![0; 55];
    let len = a_des.decrypt_array(&cipher, recovered.as_mut_ptr());
    recovered.truncate(len as usize);
    print!("Ba (16 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb (16 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");

    let mut recovered = vec![0; 55];
    let len = a_des.decrypt_array(&cipher, recovered.as_mut_ptr());
    recovered.truncate(len as usize);
    print!("Ba (128 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);

    println!("Bb (128 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher1);
    d_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");

    let mut recovered1 = vec![0; 55];
    let mut recovered2 = vec![0; 55];
    let len1 = c_des.decrypt_array(&cipher1, recovered1.as_mut_ptr());
    let len2 = d_des.decrypt_array(&cipher2, recovered2.as_mut_ptr());
    recovered1.truncate(len1 as usize);
    recovered2.truncate(len2 as usize);

    print!("B1a (0 rounds) =\t");
    for b in recovered1.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");
    print!("B2a (0 rounds) =\t");
    for b in recovered2.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted1 = String::new();
    let mut converted2 = String::new();
    unsafe { converted1.as_mut_vec() }.append(&mut recovered1);
    unsafe { converted2.as_mut_vec() }.append(&mut recovered2);
    
    println!("B1b (0 rounds) =\t{}", converted1);
    assert_eq!(converted1, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted1, message);
    println!("B2b (0 rounds) =\t{}", converted2);
    assert_eq!(converted2, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted2, message);
    assert_eq!(converted1, converted1);
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");

    let mut recovered = vec![0; 8];
    let len = a_des.decrypt_array(&cipher, recovered.as_mut_ptr());
    recovered.truncate(len as usize);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    
    let mut recovered = vec![0; 8];
    let len = a_des.decrypt_array(&cipher, recovered.as_mut_ptr());
    recovered.truncate(len as usize);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "37 20 62 79 74 65 73 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);

    println!("Bb =\t{}", converted);
    assert_eq!(converted, "7 bytes");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    
    let mut recovered = vec![0; 16];
    let len = a_des.decrypt_array(&cipher, recovered.as_mut_ptr());
    recovered.truncate(len as usize);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 20 61 6D 20 4F 4B 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "I am OK.");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");

    let mut recovered = vec![0; 16];
    let len = a_des.decrypt_array(&cipher, recovered.as_mut_ptr());
    recovered.truncate(len as usize);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "50 41 52 4B 20 59 6F 75 6E 67 68 6F ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "PARK Youngho");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 24];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = vec![0; 24];
    let len = a_des.decrypt_array(&cipher, recovered.as_mut_ptr());
    recovered.truncate(len as usize);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "EA B3 A0 EB A7 99 EC 8A B5 EB 8B 88 EB 8B A4 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "고맙습니다.");
    assert_eq!(converted, message);
    println!("-------------------------------");
}

fn des_decrypt_array_with_padding_pkcs7_ecb_into_vec()
{
    println!("des_decrypt_array_with_padding_pkcs7_ecb_into_vec()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_array_into_vec(&cipher, &mut recovered);
    print!("Ba (16 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb (16 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_array_into_vec(&cipher, &mut recovered);
    print!("Ba (128 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb (128 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher1);
    d_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");

    let mut recovered1 = Vec::<u8>::new();
    let mut recovered2 = Vec::<u8>::new();
    c_des.decrypt_array_into_vec(&cipher1, &mut recovered1);
    d_des.decrypt_array_into_vec(&cipher2, &mut recovered2);
    print!("B1a (0 rounds) =\t");
    for b in recovered1.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");
    print!("B2a (0 rounds) =\t");
    for b in recovered2.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E ");

    let mut converted1 = String::new();
    let mut converted2 = String::new();
    unsafe { converted1.as_mut_vec() }.append(&mut recovered1);
    unsafe { converted2.as_mut_vec() }.append(&mut recovered2);
    
    println!("B1b (0 rounds) =\t{}", converted1);
    assert_eq!(converted1, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted1, message);
    println!("B2b (0 rounds) =\t{}", converted2);
    assert_eq!(converted2, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted2, message);
    assert_eq!(converted1, converted1);
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_array_into_vec(&cipher, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");
    
    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_array_into_vec(&cipher, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "37 20 62 79 74 65 73 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "7 bytes");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");
    
    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_array_into_vec(&cipher, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 20 61 6D 20 4F 4B 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "I am OK.");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_array_into_vec(&cipher, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "50 41 52 4B 20 59 6F 75 6E 67 68 6F ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "PARK Youngho");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 24];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = Vec::<u8>::new();
    a_des.decrypt_array_into_vec(&cipher, &mut recovered);
    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "EA B3 A0 EB A7 99 EC 8A B5 EB 8B 88 EB 8B A4 2E ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.append(&mut recovered);
    
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "고맙습니다.");
    assert_eq!(converted, message);
    println!("-------------------------------");
}

fn des_decrypt_array_with_padding_pkcs7_ecb_into_array()
{
    println!("des_decrypt_array_with_padding_pkcs7_ecb_into_array()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");

    let mut recovered = [0u8; 56];
    let len = a_des.decrypt_array_into_array(&cipher, &mut recovered);
    print!("Ba (16 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb (16 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");

    let mut recovered = [0u8; 56];
    let len = a_des.decrypt_array_into_array(&cipher, &mut recovered);
    print!("Ba (16 rounds) =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb (16 rounds) =\t{}", converted);
    assert_eq!(converted, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted, message);
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher1);
    d_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");

    let mut recovered1 = [0u8; 56];
    let mut recovered2 = [0u8; 56];
    let len1 = c_des.decrypt_array_into_array(&cipher1, &mut recovered1);
    let len2 = d_des.decrypt_array_into_array(&cipher2, &mut recovered2);
    print!("B1a (0 rounds) =\t");
    for b in recovered1.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E 00 ");
    print!("B2a (0 rounds) =\t");
    for b in recovered2.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 6E 20 74 68 65 20 62 65 67 69 6E 6E 69 6E 67 20 47 6F 64 20 63 72 65 61 74 65 64 20 74 68 65 20 68 65 61 76 65 6E 73 20 61 6E 64 20 74 68 65 20 65 61 72 74 68 2E 00 ");

    let mut converted1 = String::new();
    let mut converted2 = String::new();
    unsafe { converted1.as_mut_vec() }.write(&recovered1);
    unsafe { converted2.as_mut_vec() }.write(&recovered2);
    unsafe { converted1.as_mut_vec() }.truncate(len1 as usize);
    unsafe { converted2.as_mut_vec() }.truncate(len2 as usize);
    println!("B1b (0 rounds) =\t{}", converted1);
    println!("B2b (0 rounds) =\t{}", converted2);
    assert_eq!(converted1, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted2, "In the beginning God created the heavens and the earth.");
    assert_eq!(converted1, message);
    assert_eq!(converted2, message);
    assert_eq!(converted1, converted2);
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");

    let mut recovered = [0u8; 8];
    let len = a_des.decrypt_array_into_array(&cipher, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");

    let mut recovered = [0u8; 8];
    let len = a_des.decrypt_array_into_array(&cipher, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "37 20 62 79 74 65 73 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "7 bytes");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = [0u8; 16];
    let len = a_des.decrypt_array_into_array(&cipher, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "49 20 61 6D 20 4F 4B 2E 00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "I am OK.");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");

    let mut recovered = [0u8; 16];
    let len = a_des.decrypt_array_into_array(&cipher, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "50 41 52 4B 20 59 6F 75 6E 67 68 6F 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "PARK Youngho");
    assert_eq!(converted, message);
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 24];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = [0u8; 24];
    let len = a_des.decrypt_array_into_array(&cipher, &mut recovered);

    print!("Ba =\t");
    for b in recovered.clone()
        { print!("{:02X} ", b); }
    println!();
    let mut txt = String::new();
    for c in recovered.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "EA B3 A0 EB A7 99 EC 8A B5 EB 8B 88 EB 8B A4 2E 00 00 00 00 00 00 00 00 ");

    let mut converted = String::new();
    unsafe { converted.as_mut_vec() }.write(&recovered);
    unsafe { converted.as_mut_vec() }.truncate(len as usize);
    println!("Bb =\t{}", converted);
    assert_eq!(converted, "고맙습니다.");
    assert_eq!(converted, message);
    println!("-------------------------------");
}

fn des_decrypt_array_with_padding_pkcs7_ecb_into_string()
{
    println!("des_decrypt_array_with_padding_pkcs7_ecb_into_string()");
    use std::io::Write;
    use std::fmt::Write as _;
    use cryptocol::symmetric::{ DES, DES_Expanded, ECB_PKCS7 };

    // Normal case
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C (16 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "6F 10 01 6D 99 BF 41 F8 BC 00 A8 1D 81 B7 4B 20 6F B5 30 0A 14 03 A9 8E 69 E7 A6 33 42 AF 97 59 ED 9D E0 95 35 DC DF 0D 99 58 FA 92 13 50 4D 50 D3 4E 76 9C C5 BB 9E CB ");

    let mut recovered = String::new();
    a_des.decrypt_array_into_string(&cipher, &mut recovered);
    println!("B (16 rounds) =\t{}", recovered);
    assert_eq!(recovered, "In the beginning God created the heavens and the earth.");
    assert_eq!(recovered, message);
    println!();

    // Expanded case for 128 rounds
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES_Expanded::<128, 0x_8103_8103_8103_8103_8103_8103_8103_8103_u128>::new_with_key_u64(key);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 56];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C (128 rounds) =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "DD C6 D8 D1 B0 66 D9 AC F7 F3 B4 FD D6 6C ED 78 20 FB A6 8D 35 38 EA 65 B0 65 23 05 FF D4 53 B1 D1 E0 C5 52 36 1E AC E2 19 EF 94 B8 98 04 A9 69 CC 6A BC 81 7D 6B 29 C0 ");

    let mut recovered = String::new();
    a_des.decrypt_array_into_string(&cipher, &mut recovered);
    println!("B (128 rounds) =\t{}", recovered);
    assert_eq!(recovered, "In the beginning God created the heavens and the earth.");
    assert_eq!(recovered, message);
    println!();

    // Expanded case for 0 rounds which means that key is meaningless
    let key1 = 0x_1234567890ABCDEF_u64;
    let key2 = 0_u64;
    println!("K =\t{:#016X}", key);
    let mut c_des = DES_Expanded::<0, 0>::new_with_key_u64(key1);
    let mut d_des = DES_Expanded::<0, 0>::new_with_key_u64(key2);

    let message = "In the beginning God created the heavens and the earth.";
    println!("M =\t{}", message);
    let mut cipher1 = [0_u8; 56];
    let mut cipher2 = [0_u8; 56];
    c_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher1);
    d_des.encrypt_into_array(message.as_ptr(), message.len() as u64, &mut cipher2);
    print!("C (0 rounds) =\t");
    for c in cipher1.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher1.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");
    print!("D (0 rounds) =\t");
    for c in cipher2.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher2.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "86 9D 10 B8 94 9A 10 91 9A 9B 96 9D 9D 96 9D 9B 10 8B 9F 98 10 93 B1 9A 92 B8 9A 98 10 B8 94 9A 10 94 9A 92 B9 9A 9D B3 10 92 9D 98 10 B8 94 9A 10 9A 92 B1 B8 94 1D 02 ");

    let mut recovered1 = String::new();
    let mut recovered2 = String::new();
    c_des.decrypt_array_into_string(&cipher1, &mut recovered1);
    d_des.decrypt_array_into_string(&cipher2, &mut recovered2);
    println!("B1 (0 rounds) =\t{}", recovered1);
    println!("B2 (0 rounds) =\t{}", recovered2);
    assert_eq!(recovered1, "In the beginning God created the heavens and the earth.");
    assert_eq!(recovered2, "In the beginning God created the heavens and the earth.");
    assert_eq!(recovered1, message);
    assert_eq!(recovered2, message);
    assert_eq!(recovered1, recovered2);
    println!();

    // Normal case for the message of 0 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "41 7F 89 79 08 CD A1 4C ");

    let mut recovered = String::new();
    a_des.decrypt_array_into_string(&cipher, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "");
    assert_eq!(recovered, message);
    println!();

    // Normal case for the message shorter than 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "7 bytes";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 8];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "F6 F0 41 DD 55 55 3B 35 ");

    let mut recovered = String::new();
    a_des.decrypt_array_into_string(&cipher, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "7 bytes");
    assert_eq!(recovered, message);
    println!();

    // Normal case for the message of 8 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "I am OK.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "27 F5 93 EE 76 DC 64 87 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = String::new();
    a_des.decrypt_array_into_string(&cipher, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "I am OK.");
    assert_eq!(recovered, message);
    println!();

    // Normal case for the message longer than 8 bytes and shorter than 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "PARK Youngho";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 16];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "8E 52 20 47 78 78 51 B7 00 69 10 77 91 B7 52 36 ");

    let mut recovered = String::new();
    a_des.decrypt_array_into_string(&cipher, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "PARK Youngho");
    assert_eq!(recovered, message);
    println!();

    // Normal case for the message of 16 bytes
    let key = 0x_1234567890ABCDEF_u64;
    println!("K =\t{:#016X}", key);
    let mut a_des = DES::new_with_key_u64(key);

    let message = "고맙습니다.";
    println!("M =\t{}", message);
    let mut cipher = [0_u8; 24];
    a_des.encrypt_str_into_array(&message, &mut cipher);
    print!("C =\t");
    for c in cipher.clone()
        { print!("{:02X} ", c); }
    println!();
    let mut txt = String::new();
    for c in cipher.clone()
        { write!(txt, "{:02X} ", c); }
    assert_eq!(txt, "20 83 6B 12 1D 3A 5D BA 4D D6 5F 5A 8E 2E AC E7 41 7F 89 79 08 CD A1 4C ");

    let mut recovered = String::new();
    a_des.decrypt_array_into_string(&cipher, &mut recovered);
    println!("B =\t{}", recovered);
    assert_eq!(recovered, "고맙습니다.");
    assert_eq!(recovered, message);
    println!("-------------------------------");
}