use std::convert::TryInto;
const NB: usize = 4;
pub const BLOCK_SIZE: usize = NB << 2;
const S_BOX: [u8; 256] = [
0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16,
];
const INV_S_BOX: [u8; 256] = [
0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d,
];
pub fn encrypt(input: &[u8; BLOCK_SIZE], cipher_key: &[u8]) -> [u8; 16] {
let mut state = bytes2block(input);
let w = key_expansion(cipher_key);
let round_keys_len = w.len() >> 4;
let mut round_key_start = 0;
let mut round = 1;
loop {
add_round_key(
&mut state,
&w[round_key_start..round_key_start + BLOCK_SIZE],
);
round_key_start += BLOCK_SIZE;
round += 1;
sub_bytes(&mut state);
shift_rows(&mut state);
if round == round_keys_len {
break;
}
mix_columns(&mut state);
}
add_round_key(&mut state, &w[round_key_start..]);
block2bytes(&state)
}
pub fn decrypt_straight(input: &[u8; BLOCK_SIZE], cipher_key: &[u8]) -> [u8; 16] {
let mut state = bytes2block(input);
let w = key_expansion(cipher_key);
let round_keys_len = w.len() >> 4;
let mut round_key_end = w.len() - BLOCK_SIZE;
add_round_key(&mut state, &w[round_key_end..]);
for _ in (2..round_keys_len).rev() {
inv_shift_rows(&mut state);
inv_sub_bytes(&mut state);
add_round_key(&mut state, &w[round_key_end - BLOCK_SIZE..round_key_end]);
round_key_end -= BLOCK_SIZE;
inv_mix_columns(&mut state);
}
inv_shift_rows(&mut state);
inv_sub_bytes(&mut state);
add_round_key(&mut state, &w[..BLOCK_SIZE]);
block2bytes(&state)
}
pub fn decrypt(input: &[u8; BLOCK_SIZE], cipher_key: &[u8]) -> [u8; 16] {
let mut state = bytes2block(input);
let w = key_expansion_inv(cipher_key);
let round_keys_len = w.len() >> 4;
let mut round_key_start = w.len() - BLOCK_SIZE;
let mut round = round_keys_len;
loop {
add_round_key(
&mut state,
&w[round_key_start..round_key_start + BLOCK_SIZE],
);
round_key_start -= BLOCK_SIZE;
round -= 1;
inv_sub_bytes(&mut state);
inv_shift_rows(&mut state);
if round == 1 {
break;
}
inv_mix_columns(&mut state);
}
add_round_key(&mut state, &w[..BLOCK_SIZE]);
block2bytes(&state)
}
fn bytes2block(input: &[u8; BLOCK_SIZE]) -> [u8; BLOCK_SIZE] {
let mut block = [0u8; BLOCK_SIZE];
for r in 0..4 {
let base = r << 2;
for c in 0..4 {
block[base + c] = input[r + (c << 2)];
}
}
block
}
fn block2bytes(block: &[u8; BLOCK_SIZE]) -> [u8; BLOCK_SIZE] {
let mut output = [0u8; BLOCK_SIZE];
for r in 0..4 {
let base = r << 2;
for c in 0..4 {
output[r + (c << 2)] = block[base + c];
}
}
output
}
fn sub_bytes(block: &mut [u8]) {
for i in 0..block.len() {
block[i] = S_BOX[block[i] as usize]
}
}
fn inv_sub_bytes(block: &mut [u8]) {
for i in 0..block.len() {
block[i] = INV_S_BOX[block[i] as usize]
}
}
fn shift_rows(state: &mut [u8; BLOCK_SIZE]) {
for i in 1..NB {
state[i << 2..(i + 1) << 2].rotate_left(i);
}
}
fn inv_shift_rows(state: &mut [u8; BLOCK_SIZE]) {
for i in 1..NB {
state[i << 2..(i + 1) << 2].rotate_right(i);
}
}
fn mix_columns(state: &mut [u8; BLOCK_SIZE]) {
let mut r = [0usize; NB];
let mut result = [0u8; BLOCK_SIZE];
for c in 0..NB {
r[0] = c;
r[1] = 4 + c;
r[2] = 8 + c;
r[3] = 12 + c;
result[r[0]] =
modular_mul_2(state[r[0]]) ^ modular_mul_3(state[r[1]]) ^ state[r[2]] ^ state[r[3]];
result[r[1]] =
state[r[0]] ^ modular_mul_2(state[r[1]]) ^ modular_mul_3(state[r[2]]) ^ state[r[3]];
result[r[2]] =
state[r[0]] ^ state[r[1]] ^ modular_mul_2(state[r[2]]) ^ modular_mul_3(state[r[3]]);
result[r[3]] =
modular_mul_3(state[r[0]]) ^ state[r[1]] ^ state[r[2]] ^ modular_mul_2(state[r[3]]);
}
*state = result;
}
fn inv_mix_columns(state: &mut [u8; BLOCK_SIZE]) {
let mut r = [0usize; NB];
let mut result = [0u8; BLOCK_SIZE];
for c in 0..NB {
r[0] = c;
r[1] = 4 + c;
r[2] = 8 + c;
r[3] = 12 + c;
result[r[0]] = modular_mul_14(state[r[0]])
^ modular_mul_11(state[r[1]])
^ modular_mul_13(state[r[2]])
^ modular_mul_9(state[r[3]]);
result[r[1]] = modular_mul_9(state[r[0]])
^ modular_mul_14(state[r[1]])
^ modular_mul_11(state[r[2]])
^ modular_mul_13(state[r[3]]);
result[r[2]] = modular_mul_13(state[r[0]])
^ modular_mul_9(state[r[1]])
^ modular_mul_14(state[r[2]])
^ modular_mul_11(state[r[3]]);
result[r[3]] = modular_mul_11(state[r[0]])
^ modular_mul_13(state[r[1]])
^ modular_mul_9(state[r[2]])
^ modular_mul_14(state[r[3]]);
}
*state = result;
}
fn modular_mul_2(byte: u8) -> u8 {
if byte & 0x80 > 0 {
(byte << 1) ^ 0x1b
} else {
byte << 1
}
}
fn gmul(mut a: u8, mut b: u8) -> u8 {
let mut p: u8 = 0;
while a > 0 && b > 0 {
if b & 1 > 0 {
p ^= a;
}
if a & 0x80 > 0 {
a = (a << 1) ^ 0x1b;
} else {
a <<= 1;
}
b >>= 1;
}
p
}
#[inline]
fn modular_mul_3(byte: u8) -> u8 {
modular_mul_2(byte) ^ byte
}
fn modular_mul_9(byte: u8) -> u8 {
let mul2 = modular_mul_2(byte);
let mul4 = modular_mul_2(mul2);
let mul8 = modular_mul_2(mul4);
mul8 ^ byte
}
#[inline]
fn modular_mul_11(byte: u8) -> u8 {
gmul(11, byte)
}
#[inline]
fn modular_mul_13(byte: u8) -> u8 {
gmul(13, byte)
}
#[inline]
fn modular_mul_14(byte: u8) -> u8 {
gmul(14, byte)
}
fn add_round_key(state: &mut [u8; BLOCK_SIZE], round_key: &[u8]) {
for i in 0..NB {
let w = i << 2;
state[i] ^= round_key[w];
state[4 + i] ^= round_key[w + 1];
state[8 + i] ^= round_key[w + 2];
state[12 + i] ^= round_key[w + 3];
}
}
fn key_expansion(cipher_key: &[u8]) -> Vec<u8> {
match cipher_key.len() {
16 => key_expansion_128(cipher_key).to_vec(),
24 => key_expansion_192(cipher_key).to_vec(),
32 => key_expansion_256(cipher_key).to_vec(),
_ => panic!(
"The key length should be 16 ,24 or 32 bytes for AES-128, AES-192 and AES-256 respectively"
),
}
}
fn key_expansion_inv(cipher_key: &[u8]) -> Vec<u8> {
let mut schedule = key_expansion(cipher_key);
let mut start = BLOCK_SIZE;
let end = schedule.len() - BLOCK_SIZE;
while start < end {
let range = start..start + BLOCK_SIZE;
let mut block = bytes2block(&mut schedule[range.clone()].try_into().unwrap());
inv_mix_columns(&mut block);
schedule[range].copy_from_slice(&block2bytes(&block));
start += BLOCK_SIZE;
}
schedule
}
fn key_expansion_128(cipher_key: &[u8]) -> [u8; BLOCK_SIZE * 11] {
const NK: usize = 4;
const NR: usize = 10;
const MAX_I: usize = NB * (NR + 1);
let mut w = [0u8; BLOCK_SIZE * (NR + 1)];
w[..16].copy_from_slice(cipher_key);
let mut i = NK;
let mut temp = [0u8; 4];
temp.copy_from_slice(&w[(i - 1) << 2..i << 2]);
while i < MAX_I {
temp.rotate_left(1);
sub_bytes(&mut temp);
xor_4(&mut temp, &rcon_128(i));
i = key_expansion_xor(&mut temp, &mut w, NK, i, MAX_I, NK);
}
w
}
fn key_expansion_192(cipher_key: &[u8]) -> [u8; BLOCK_SIZE * 13] {
const NK: usize = 6;
const NR: usize = 12;
const MAX_I: usize = NB * (NR + 1);
let mut w = [0u8; BLOCK_SIZE * (NR + 1)];
w[..24].copy_from_slice(cipher_key);
let mut i = NK;
let mut temp = [0u8; 4];
temp.copy_from_slice(&w[(i - 1) << 2..i << 2]);
while i < MAX_I {
temp.rotate_left(1);
sub_bytes(&mut temp);
xor_4(&mut temp, &[0x01 << (i / 6 - 1), 0, 0, 0]);
i = key_expansion_xor(&mut temp, &mut w, NK, i, MAX_I, NK);
}
w
}
fn key_expansion_256(cipher_key: &[u8]) -> [u8; BLOCK_SIZE * 15] {
const NK: usize = 8;
const NR: usize = 14;
const MAX_I: usize = NB * (NR + 1);
let mut w = [0u8; BLOCK_SIZE * (NR + 1)];
w[..32].copy_from_slice(cipher_key);
let mut i = NK;
let mut temp = [0u8; 4];
temp.copy_from_slice(&w[(i - 1) << 2..i << 2]);
while i < MAX_I {
temp.rotate_left(1);
sub_bytes(&mut temp);
xor_4(&mut temp, &[0x01 << ((i >> 3) - 1), 0, 0, 0]);
i = key_expansion_xor(&mut temp, &mut w, NK, i, MAX_I, 4);
if i == MAX_I {
return w;
}
sub_bytes(&mut temp);
i = key_expansion_xor(&mut temp, &mut w, NK, i, MAX_I, 4);
}
w
}
fn xor_4(left: &mut [u8; 4], right: &[u8]) {
left[0] ^= right[0];
left[1] ^= right[1];
left[2] ^= right[2];
left[3] ^= right[3];
}
fn rcon_128(i: usize) -> [u8; 4] {
let i = (i >> 2) - 1;
let (base, i) = if i > 7 { (0x1b, i - 8) } else { (0x01, i) };
[base << i, 0u8, 0, 0]
}
fn key_expansion_xor(
temp: &mut [u8; 4],
w: &mut [u8],
nk: usize,
mut i: usize,
max_i: usize,
iterations: usize,
) -> usize {
for _ in 0..iterations {
xor_4(temp, &w[(i - nk) << 2..(i - nk + 1) << 2]);
w[i << 2..(i + 1) << 2].copy_from_slice(temp);
i += 1;
if i == max_i {
break;
}
temp.copy_from_slice(&w[(i - 1) << 2..i << 2]);
}
return i;
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_key_expansion_test() {
let cipher_key = [
0x2bu8, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf,
0x4f, 0x3c,
];
let result = key_expansion(&cipher_key);
assert_eq!(
&result,
&[
0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf,
0x4f, 0x3c, 0xa0, 0xfa, 0xfe, 0x17, 0x88, 0x54, 0x2c, 0xb1, 0x23, 0xa3, 0x39, 0x39,
0x2a, 0x6c, 0x76, 0x05, 0xf2, 0xc2, 0x95, 0xf2, 0x7a, 0x96, 0xb9, 0x43, 0x59, 0x35,
0x80, 0x7a, 0x73, 0x59, 0xf6, 0x7f, 0x3d, 0x80, 0x47, 0x7d, 0x47, 0x16, 0xfe, 0x3e,
0x1e, 0x23, 0x7e, 0x44, 0x6d, 0x7a, 0x88, 0x3b, 0xef, 0x44, 0xa5, 0x41, 0xa8, 0x52,
0x5b, 0x7f, 0xb6, 0x71, 0x25, 0x3b, 0xdb, 0x0b, 0xad, 0x00, 0xd4, 0xd1, 0xc6, 0xf8,
0x7c, 0x83, 0x9d, 0x87, 0xca, 0xf2, 0xb8, 0xbc, 0x11, 0xf9, 0x15, 0xbc, 0x6d, 0x88,
0xa3, 0x7a, 0x11, 0x0b, 0x3e, 0xfd, 0xdb, 0xf9, 0x86, 0x41, 0xca, 0x00, 0x93, 0xfd,
0x4e, 0x54, 0xf7, 0x0e, 0x5f, 0x5f, 0xc9, 0xf3, 0x84, 0xa6, 0x4f, 0xb2, 0x4e, 0xa6,
0xdc, 0x4f, 0xea, 0xd2, 0x73, 0x21, 0xb5, 0x8d, 0xba, 0xd2, 0x31, 0x2b, 0xf5, 0x60,
0x7f, 0x8d, 0x29, 0x2f, 0xac, 0x77, 0x66, 0xf3, 0x19, 0xfa, 0xdc, 0x21, 0x28, 0xd1,
0x29, 0x41, 0x57, 0x5c, 0x00, 0x6e, 0xd0, 0x14, 0xf9, 0xa8, 0xc9, 0xee, 0x25, 0x89,
0xe1, 0x3f, 0x0c, 0xc8, 0xb6, 0x63, 0x0c, 0xa6
]
);
let cipher_key = [
0x8eu8, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90,
0x79, 0xe5, 0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b,
];
let result = key_expansion(&cipher_key);
assert_eq!(
&result,
&[
0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90,
0x79, 0xe5, 0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b, 0xfe, 0x0c, 0x91, 0xf7,
0x24, 0x02, 0xf5, 0xa5, 0xec, 0x12, 0x06, 0x8e, 0x6c, 0x82, 0x7f, 0x6b, 0x0e, 0x7a,
0x95, 0xb9, 0x5c, 0x56, 0xfe, 0xc2, 0x4d, 0xb7, 0xb4, 0xbd, 0x69, 0xb5, 0x41, 0x18,
0x85, 0xa7, 0x47, 0x96, 0xe9, 0x25, 0x38, 0xfd, 0xe7, 0x5f, 0xad, 0x44, 0xbb, 0x09,
0x53, 0x86, 0x48, 0x5a, 0xf0, 0x57, 0x21, 0xef, 0xb1, 0x4f, 0xa4, 0x48, 0xf6, 0xd9,
0x4d, 0x6d, 0xce, 0x24, 0xaa, 0x32, 0x63, 0x60, 0x11, 0x3b, 0x30, 0xe6, 0xa2, 0x5e,
0x7e, 0xd5, 0x83, 0xb1, 0xcf, 0x9a, 0x27, 0xf9, 0x39, 0x43, 0x6a, 0x94, 0xf7, 0x67,
0xc0, 0xa6, 0x94, 0x07, 0xd1, 0x9d, 0xa4, 0xe1, 0xec, 0x17, 0x86, 0xeb, 0x6f, 0xa6,
0x49, 0x71, 0x48, 0x5f, 0x70, 0x32, 0x22, 0xcb, 0x87, 0x55, 0xe2, 0x6d, 0x13, 0x52,
0x33, 0xf0, 0xb7, 0xb3, 0x40, 0xbe, 0xeb, 0x28, 0x2f, 0x18, 0xa2, 0x59, 0x67, 0x47,
0xd2, 0x6b, 0x45, 0x8c, 0x55, 0x3e, 0xa7, 0xe1, 0x46, 0x6c, 0x94, 0x11, 0xf1, 0xdf,
0x82, 0x1f, 0x75, 0x0a, 0xad, 0x07, 0xd7, 0x53, 0xca, 0x40, 0x05, 0x38, 0x8f, 0xcc,
0x50, 0x06, 0x28, 0x2d, 0x16, 0x6a, 0xbc, 0x3c, 0xe7, 0xb5, 0xe9, 0x8b, 0xa0, 0x6f,
0x44, 0x8c, 0x77, 0x3c, 0x8e, 0xcc, 0x72, 0x04, 0x01, 0x00, 0x22, 0x02
]
);
let cipher_key = [
0x60u8, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d,
0x77, 0x81, 0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3,
0x09, 0x14, 0xdf, 0xf4,
];
let result = key_expansion(&cipher_key);
assert_eq!(
&result,
&[
0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d,
0x77, 0x81, 0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3,
0x09, 0x14, 0xdf, 0xf4, 0x9b, 0xa3, 0x54, 0x11, 0x8e, 0x69, 0x25, 0xaf, 0xa5, 0x1a,
0x8b, 0x5f, 0x20, 0x67, 0xfc, 0xde, 0xa8, 0xb0, 0x9c, 0x1a, 0x93, 0xd1, 0x94, 0xcd,
0xbe, 0x49, 0x84, 0x6e, 0xb7, 0x5d, 0x5b, 0x9a, 0xd5, 0x9a, 0xec, 0xb8, 0x5b, 0xf3,
0xc9, 0x17, 0xfe, 0xe9, 0x42, 0x48, 0xde, 0x8e, 0xbe, 0x96, 0xb5, 0xa9, 0x32, 0x8a,
0x26, 0x78, 0xa6, 0x47, 0x98, 0x31, 0x22, 0x29, 0x2f, 0x6c, 0x79, 0xb3, 0x81, 0x2c,
0x81, 0xad, 0xda, 0xdf, 0x48, 0xba, 0x24, 0x36, 0x0a, 0xf2, 0xfa, 0xb8, 0xb4, 0x64,
0x98, 0xc5, 0xbf, 0xc9, 0xbe, 0xbd, 0x19, 0x8e, 0x26, 0x8c, 0x3b, 0xa7, 0x09, 0xe0,
0x42, 0x14, 0x68, 0x00, 0x7b, 0xac, 0xb2, 0xdf, 0x33, 0x16, 0x96, 0xe9, 0x39, 0xe4,
0x6c, 0x51, 0x8d, 0x80, 0xc8, 0x14, 0xe2, 0x04, 0x76, 0xa9, 0xfb, 0x8a, 0x50, 0x25,
0xc0, 0x2d, 0x59, 0xc5, 0x82, 0x39, 0xde, 0x13, 0x69, 0x67, 0x6c, 0xcc, 0x5a, 0x71,
0xfa, 0x25, 0x63, 0x95, 0x96, 0x74, 0xee, 0x15, 0x58, 0x86, 0xca, 0x5d, 0x2e, 0x2f,
0x31, 0xd7, 0x7e, 0x0a, 0xf1, 0xfa, 0x27, 0xcf, 0x73, 0xc3, 0x74, 0x9c, 0x47, 0xab,
0x18, 0x50, 0x1d, 0xda, 0xe2, 0x75, 0x7e, 0x4f, 0x74, 0x01, 0x90, 0x5a, 0xca, 0xfa,
0xaa, 0xe3, 0xe4, 0xd5, 0x9b, 0x34, 0x9a, 0xdf, 0x6a, 0xce, 0xbd, 0x10, 0x19, 0x0d,
0xfe, 0x48, 0x90, 0xd1, 0xe6, 0x18, 0x8d, 0x0b, 0x04, 0x6d, 0xf3, 0x44, 0x70, 0x6c,
0x63, 0x1e
]
);
}
#[test]
fn test_aes_encrypt() {
let input = [
0x32u8, 0x43, 0xf6, 0xa8, 0x88, 0x5a, 0x30, 0x8d, 0x31, 0x31, 0x98, 0xa2, 0xe0, 0x37,
0x07, 0x34,
];
let cipher_key = [
0x2bu8, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf,
0x4f, 0x3c,
];
let output = encrypt(&input, &cipher_key);
assert_eq!(
output,
[
0x39, 0x25, 0x84, 0x1d, 0x02, 0xdc, 0x09, 0xfb, 0xdc, 0x11, 0x85, 0x97, 0x19, 0x6a,
0x0b, 0x32
]
);
let input = [
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd,
0xee, 0xff,
];
let cipher_key = [
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
0x0e, 0x0f,
];
let output = encrypt(&input, &cipher_key);
assert_eq!(
output,
[
0x69, 0xc4, 0xe0, 0xd8, 0x6a, 0x7b, 0x04, 0x30, 0xd8, 0xcd, 0xb7, 0x80, 0x70, 0xb4,
0xc5, 0x5a
]
);
let input = [
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd,
0xee, 0xff,
];
let cipher_key = [
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
];
let output = encrypt(&input, &cipher_key);
assert_eq!(
output,
[
0xdd, 0xa9, 0x7c, 0xa4, 0x86, 0x4c, 0xdf, 0xe0, 0x6e, 0xaf, 0x70, 0xa0, 0xec, 0x0d,
0x71, 0x91
]
);
let input = [
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd,
0xee, 0xff,
];
let cipher_key = [
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b,
0x1c, 0x1d, 0x1e, 0x1f,
];
let output = encrypt(&input, &cipher_key);
assert_eq!(
output,
[
0x8e, 0xa2, 0xb7, 0xca, 0x51, 0x67, 0x45, 0xbf, 0xea, 0xfc, 0x49, 0x90, 0x4b, 0x49,
0x60, 0x89
]
);
}
#[test]
fn test_aes_decrypt() {
let input = [
0x39, 0x25, 0x84, 0x1d, 0x02, 0xdc, 0x09, 0xfb, 0xdc, 0x11, 0x85, 0x97, 0x19, 0x6a,
0x0b, 0x32,
];
let cipher_key = [
0x2bu8, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf,
0x4f, 0x3c,
];
let output = decrypt_straight(&input, &cipher_key);
assert_eq!(
output,
[
0x32u8, 0x43, 0xf6, 0xa8, 0x88, 0x5a, 0x30, 0x8d, 0x31, 0x31, 0x98, 0xa2, 0xe0,
0x37, 0x07, 0x34
]
);
let input = [
0x69, 0xc4, 0xe0, 0xd8, 0x6a, 0x7b, 0x04, 0x30, 0xd8, 0xcd, 0xb7, 0x80, 0x70, 0xb4,
0xc5, 0x5a,
];
let cipher_key = [
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
0x0e, 0x0f,
];
let output = decrypt(&input, &cipher_key);
assert_eq!(
output,
[
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd,
0xee, 0xff
]
);
let input = [
0xdd, 0xa9, 0x7c, 0xa4, 0x86, 0x4c, 0xdf, 0xe0, 0x6e, 0xaf, 0x70, 0xa0, 0xec, 0x0d,
0x71, 0x91,
];
let cipher_key = [
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
];
let output = decrypt(&input, &cipher_key);
assert_eq!(
output,
[
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd,
0xee, 0xff
]
);
let input = [
0x8e, 0xa2, 0xb7, 0xca, 0x51, 0x67, 0x45, 0xbf, 0xea, 0xfc, 0x49, 0x90, 0x4b, 0x49,
0x60, 0x89,
];
let cipher_key = [
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b,
0x1c, 0x1d, 0x1e, 0x1f,
];
let output = decrypt(&input, &cipher_key);
assert_eq!(
output,
[
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd,
0xee, 0xff
]
);
}
}