Crate aes[][src]

This crate is a wrapper around different implementations of AES block ciphers.

Currently it uses:

  • aes-soft hardware independent bit-sliced implementation
  • aesni implementation using AES-NI instruction set. Used for x86-64 and x86 target architectures with enabled "aes" target feature.

Crate switches between implementations automatically at compile time. (i.e. it does not use run-time feature detection) If enforce_soft crate feature is enabled software implementation will be used regardless of target architecture and enabled target features.

Usage example

use aes::{Aes128, BlockCipher};

let key = GenericArray::from_slice(&[0u8; 16]);
let mut block = GenericArray::clone_from_slice(&[0u8; 16]);
let mut block8 = GenericArray::clone_from_slice(&[block; 8]);
// Initialize cipher
let cipher = Aes128::new(&key);

let block_copy = block.clone();
// Encrypt block in-place
cipher.encrypt_block(&mut block);
// And decrypt it back
cipher.decrypt_block(&mut block);
assert_eq!(block, block_copy);

// We can encrypt 8 blocks simultaneously using
// instruction-level parallelism
let block8_copy = block8.clone();
cipher.encrypt_blocks(&mut block8);
cipher.decrypt_blocks(&mut block8);
assert_eq!(block8, block8_copy);

For implementations of block cipher modes of operation see block-modes crate.


pub extern crate block_cipher_trait;



AES-128 block cipher instance


AES-192 block cipher instance


AES-256 block cipher instance



The trait which defines in-place encryption and decryption over single block or several blocks in parallel.