Expand description
Cipher Feedback with eight bit feedback (CFB-8) mode.
Mode functionality is accessed using traits from re-exported cipher crate.
⚠️ Security Warning: Hazmat!
This crate does not ensure ciphertexts are authentic! Thus ciphertext integrity is not verified, which can lead to serious vulnerabilities!
Example
use aes::cipher::{AsyncStreamCipher, KeyIvInit};
use hex_literal::hex;
type Aes128Cfb8Enc = cfb8::Encryptor<aes::Aes128>;
type Aes128Cfb8Dec = cfb8::Decryptor<aes::Aes128>;
let key = [0x42; 16];
let iv = [0x24; 16];
let plaintext = *b"hello world! this is my plaintext.";
let ciphertext = hex!(
"33b356ce9184290c4c8facc1c0b1f918d5475aeb75b88c161ca65bdf05c7137ff4b0"
);
// encrypt/decrypt in-place
let mut buf = plaintext.to_vec();
Aes128Cfb8Enc::new(&key.into(), &iv.into()).encrypt(&mut buf);
assert_eq!(buf[..], ciphertext[..]);
Aes128Cfb8Dec::new(&key.into(), &iv.into()).decrypt(&mut buf);
assert_eq!(buf[..], plaintext[..]);
// encrypt/decrypt from buffer to buffer
// buffer length must be equal to input length
let mut buf1 = [0u8; 34];
Aes128Cfb8Enc::new(&key.into(), &iv.into())
.encrypt_b2b(&plaintext, &mut buf1)
.unwrap();
assert_eq!(buf1[..], ciphertext[..]);
let mut buf2 = [0u8; 34];
Aes128Cfb8Dec::new(&key.into(), &iv.into())
.decrypt_b2b(&buf1, &mut buf2)
.unwrap();
assert_eq!(buf2[..], plaintext[..]);Re-exports
pub use cipher;