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x86.rs
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#[cfg(target_arch = "x86")]
use core::arch::x86::*;
#[cfg(target_arch = "x86_64")]
use core::arch::x86_64::*;
macro_rules! aes128_keyround {
($ek:tt, $i:tt, $rcon:tt) => {{
let mut key = $ek[$i - 1];
let mut gen = _mm_aeskeygenassist_si128(key, $rcon);
gen = _mm_shuffle_epi32(gen, 255);
key = _mm_xor_si128(key, _mm_slli_si128(key, 4));
key = _mm_xor_si128(key, _mm_slli_si128(key, 8));
$ek[$i] = _mm_xor_si128(key, gen);
}};
}
#[derive(Clone)]
pub struct Aes128 {
ek: [__m128i; 20],
}
impl core::fmt::Debug for Aes128 {
fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
f.debug_struct("Aes128").finish()
}
}
impl Aes128 {
pub const BLOCK_LEN: usize = 16;
pub const KEY_LEN: usize = 16;
#[inline(always)]
pub fn new(key: &[u8]) -> Self {
unsafe { Self::new_simd(key) }
}
#[target_feature(enable = "sse2,aes")]
unsafe fn new_simd(key: &[u8]) -> Self {
assert_eq!(key.len(), Self::KEY_LEN);
let mut ek: [__m128i; 20] = core::mem::zeroed();
ek[0] = _mm_loadu_si128(key.as_ptr() as *const __m128i);
aes128_keyround!(ek, 1, 0x01);
aes128_keyround!(ek, 2, 0x02);
aes128_keyround!(ek, 3, 0x04);
aes128_keyround!(ek, 4, 0x08);
aes128_keyround!(ek, 5, 0x10);
aes128_keyround!(ek, 6, 0x20);
aes128_keyround!(ek, 7, 0x40);
aes128_keyround!(ek, 8, 0x80);
aes128_keyround!(ek, 9, 0x1b);
aes128_keyround!(ek, 10, 0x36);
ek[11] = _mm_aesimc_si128(ek[9]);
ek[12] = _mm_aesimc_si128(ek[8]);
ek[13] = _mm_aesimc_si128(ek[7]);
ek[14] = _mm_aesimc_si128(ek[6]);
ek[15] = _mm_aesimc_si128(ek[5]);
ek[16] = _mm_aesimc_si128(ek[4]);
ek[17] = _mm_aesimc_si128(ek[3]);
ek[18] = _mm_aesimc_si128(ek[2]);
ek[19] = _mm_aesimc_si128(ek[1]);
Self { ek }
}
#[inline(always)]
pub fn encrypt(&self, block: &mut [u8]) {
unsafe { self.encrypt_simd(block) }
}
#[target_feature(enable = "sse2,aes")]
unsafe fn encrypt_simd(&self, block: &mut [u8]) {
debug_assert_eq!(block.len(), Self::BLOCK_LEN);
let mut m = _mm_loadu_si128(block.as_ptr() as *const __m128i);
m = _mm_xor_si128(m, self.ek[0]);
m = _mm_aesenc_si128(m, self.ek[1]);
m = _mm_aesenc_si128(m, self.ek[2]);
m = _mm_aesenc_si128(m, self.ek[3]);
m = _mm_aesenc_si128(m, self.ek[4]);
m = _mm_aesenc_si128(m, self.ek[5]);
m = _mm_aesenc_si128(m, self.ek[6]);
m = _mm_aesenc_si128(m, self.ek[7]);
m = _mm_aesenc_si128(m, self.ek[8]);
m = _mm_aesenc_si128(m, self.ek[9]);
m = _mm_aesenclast_si128(m, self.ek[10]);
_mm_storeu_si128(block.as_mut_ptr() as *mut __m128i, m);
}
#[inline(always)]
pub fn decrypt(&self, block: &mut [u8]) {
unsafe { self.decrypt_simd(block) }
}
#[target_feature(enable = "sse2,aes")]
unsafe fn decrypt_simd(&self, block: &mut [u8]) {
debug_assert_eq!(block.len(), Self::BLOCK_LEN);
let mut m = _mm_loadu_si128(block.as_ptr() as *const __m128i);
m = _mm_xor_si128(m, self.ek[10]);
m = _mm_aesdec_si128(m, self.ek[11]);
m = _mm_aesdec_si128(m, self.ek[12]);
m = _mm_aesdec_si128(m, self.ek[13]);
m = _mm_aesdec_si128(m, self.ek[14]);
m = _mm_aesdec_si128(m, self.ek[15]);
m = _mm_aesdec_si128(m, self.ek[16]);
m = _mm_aesdec_si128(m, self.ek[17]);
m = _mm_aesdec_si128(m, self.ek[18]);
m = _mm_aesdec_si128(m, self.ek[19]);
m = _mm_aesdeclast_si128(m, self.ek[0]);
_mm_storeu_si128(block.as_mut_ptr() as *mut __m128i, m);
}
}
macro_rules! aes192_keyround {
($temp1:tt, $temp2:tt, $temp3:tt) => {{
let mut temp4 = _mm_slli_si128($temp1, 0x4);
$temp2 = _mm_shuffle_epi32($temp2, 0x55);
$temp1 = _mm_xor_si128($temp1, temp4);
temp4 = _mm_slli_si128(temp4, 0x4);
$temp1 = _mm_xor_si128($temp1, temp4);
temp4 = _mm_slli_si128(temp4, 0x4);
$temp1 = _mm_xor_si128($temp1, temp4);
$temp1 = _mm_xor_si128($temp1, $temp2);
$temp2 = _mm_shuffle_epi32($temp1, 0xff);
temp4 = _mm_slli_si128($temp3, 0x4);
$temp3 = _mm_xor_si128($temp3, temp4);
$temp3 = _mm_xor_si128($temp3, $temp2);
}};
}
#[derive(Clone)]
pub struct Aes192 {
ek: [__m128i; 24],
}
impl core::fmt::Debug for Aes192 {
fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
f.debug_struct("Aes192").finish()
}
}
impl Aes192 {
pub const BLOCK_LEN: usize = 16;
pub const KEY_LEN: usize = 24;
#[inline(always)]
pub fn new(key: &[u8]) -> Self {
unsafe { Self::new_simd(key) }
}
#[target_feature(enable = "sse2,aes")]
unsafe fn new_simd(key: &[u8]) -> Self {
assert_eq!(key.len(), Self::KEY_LEN);
use core::mem::transmute;
let mut ek: [__m128i; 24] = core::mem::zeroed();
let mut k2 = [0u8; 16];
k2[0..8].copy_from_slice(&key[16..24]);
let mut temp1 = _mm_loadu_si128(key.as_ptr() as *const __m128i);
let mut temp2: __m128i = core::mem::zeroed();
let mut temp3 = _mm_loadu_si128(k2.as_ptr() as *const __m128i);
ek[0] = temp1;
ek[1] = temp3;
temp2 = _mm_aeskeygenassist_si128(temp3, 0x1);
aes192_keyround!(temp1, temp2, temp3);
ek[1] = transmute(_mm_shuffle_pd(transmute(ek[1]), transmute(temp1), 0));
ek[2] = transmute(_mm_shuffle_pd(transmute(temp1), transmute(temp3), 1));
temp2 = _mm_aeskeygenassist_si128(temp3, 0x2);
aes192_keyround!(temp1, temp2, temp3);
ek[3] = temp1;
ek[4] = temp3;
temp2 = _mm_aeskeygenassist_si128(temp3, 0x4);
aes192_keyround!(temp1, temp2, temp3);
ek[4] = transmute(_mm_shuffle_pd(transmute(ek[4]), transmute(temp1), 0));
ek[5] = transmute(_mm_shuffle_pd(transmute(temp1), transmute(temp3), 1));
temp2 = _mm_aeskeygenassist_si128(temp3, 0x8);
aes192_keyround!(temp1, temp2, temp3);
ek[6] = temp1;
ek[7] = temp3;
temp2 = _mm_aeskeygenassist_si128(temp3, 0x10);
aes192_keyround!(temp1, temp2, temp3);
ek[7] = transmute(_mm_shuffle_pd(transmute(ek[7]), transmute(temp1), 0));
ek[8] = transmute(_mm_shuffle_pd(transmute(temp1), transmute(temp3), 1));
temp2 = _mm_aeskeygenassist_si128(temp3, 0x20);
aes192_keyround!(temp1, temp2, temp3);
ek[9] = temp1;
ek[10] = temp3;
temp2 = _mm_aeskeygenassist_si128(temp3, 0x40);
aes192_keyround!(temp1, temp2, temp3);
ek[10] = transmute(_mm_shuffle_pd(transmute(ek[10]), transmute(temp1), 0));
ek[11] = transmute(_mm_shuffle_pd(transmute(temp1), transmute(temp3), 1));
temp2 = _mm_aeskeygenassist_si128(temp3, 0x80);
aes192_keyround!(temp1, temp2, temp3);
ek[12] = temp1;
ek[13] = _mm_aesimc_si128(ek[11]);
ek[14] = _mm_aesimc_si128(ek[10]);
ek[15] = _mm_aesimc_si128(ek[9]);
ek[16] = _mm_aesimc_si128(ek[8]);
ek[17] = _mm_aesimc_si128(ek[7]);
ek[18] = _mm_aesimc_si128(ek[6]);
ek[19] = _mm_aesimc_si128(ek[5]);
ek[20] = _mm_aesimc_si128(ek[4]);
ek[21] = _mm_aesimc_si128(ek[3]);
ek[22] = _mm_aesimc_si128(ek[2]);
ek[23] = _mm_aesimc_si128(ek[1]);
Self { ek }
}
#[inline(always)]
pub fn encrypt(&self, block: &mut [u8]) {
unsafe { self.encrypt_simd(block) }
}
#[target_feature(enable = "sse2,aes")]
unsafe fn encrypt_simd(&self, block: &mut [u8]) {
debug_assert_eq!(block.len(), Self::BLOCK_LEN);
let mut m = _mm_loadu_si128(block.as_ptr() as *const __m128i);
m = _mm_xor_si128(m, self.ek[0]);
m = _mm_aesenc_si128(m, self.ek[1]);
m = _mm_aesenc_si128(m, self.ek[2]);
m = _mm_aesenc_si128(m, self.ek[3]);
m = _mm_aesenc_si128(m, self.ek[4]);
m = _mm_aesenc_si128(m, self.ek[5]);
m = _mm_aesenc_si128(m, self.ek[6]);
m = _mm_aesenc_si128(m, self.ek[7]);
m = _mm_aesenc_si128(m, self.ek[8]);
m = _mm_aesenc_si128(m, self.ek[9]);
m = _mm_aesenc_si128(m, self.ek[10]);
m = _mm_aesenc_si128(m, self.ek[11]);
m = _mm_aesenclast_si128(m, self.ek[12]);
_mm_storeu_si128(block.as_mut_ptr() as *mut __m128i, m);
}
#[inline(always)]
pub fn decrypt(&self, block: &mut [u8]) {
unsafe { self.decrypt_simd(block) }
}
#[target_feature(enable = "sse2,aes")]
unsafe fn decrypt_simd(&self, block: &mut [u8]) {
debug_assert_eq!(block.len(), Self::BLOCK_LEN);
let mut m = _mm_loadu_si128(block.as_ptr() as *const __m128i);
m = _mm_xor_si128(m, self.ek[12]);
m = _mm_aesdec_si128(m, self.ek[13]);
m = _mm_aesdec_si128(m, self.ek[14]);
m = _mm_aesdec_si128(m, self.ek[15]);
m = _mm_aesdec_si128(m, self.ek[16]);
m = _mm_aesdec_si128(m, self.ek[17]);
m = _mm_aesdec_si128(m, self.ek[18]);
m = _mm_aesdec_si128(m, self.ek[19]);
m = _mm_aesdec_si128(m, self.ek[20]);
m = _mm_aesdec_si128(m, self.ek[21]);
m = _mm_aesdec_si128(m, self.ek[22]);
m = _mm_aesdec_si128(m, self.ek[23]);
m = _mm_aesdeclast_si128(m, self.ek[0]);
_mm_storeu_si128(block.as_mut_ptr() as *mut __m128i, m);
}
}
macro_rules! aes256_keyround_1 {
($temp1:tt, $temp2:tt) => {{
let mut temp4 = _mm_slli_si128($temp1, 0x4);
$temp2 = _mm_shuffle_epi32($temp2, 0xff);
$temp1 = _mm_xor_si128($temp1, temp4);
temp4 = _mm_slli_si128(temp4, 0x4);
$temp1 = _mm_xor_si128($temp1, temp4);
temp4 = _mm_slli_si128(temp4, 0x4);
$temp1 = _mm_xor_si128($temp1, temp4);
$temp1 = _mm_xor_si128($temp1, $temp2);
}};
}
macro_rules! aes256_keyround_2 {
($temp1:tt, $temp3:tt) => {{
let mut temp4 = _mm_aeskeygenassist_si128($temp1, 0x0);
let temp2 = _mm_shuffle_epi32(temp4, 0xaa);
temp4 = _mm_slli_si128($temp3, 0x4);
$temp3 = _mm_xor_si128($temp3, temp4);
temp4 = _mm_slli_si128(temp4, 0x4);
$temp3 = _mm_xor_si128($temp3, temp4);
temp4 = _mm_slli_si128(temp4, 0x4);
$temp3 = _mm_xor_si128($temp3, temp4);
$temp3 = _mm_xor_si128($temp3, temp2);
}};
}
#[derive(Clone)]
pub struct Aes256 {
ek: [__m128i; 28],
}
impl core::fmt::Debug for Aes256 {
fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
f.debug_struct("Aes256").finish()
}
}
impl Aes256 {
pub const BLOCK_LEN: usize = 16;
pub const KEY_LEN: usize = 32;
#[inline(always)]
pub fn new(key: &[u8]) -> Self {
unsafe { Self::new_simd(key) }
}
#[target_feature(enable = "sse2,aes")]
unsafe fn new_simd(key: &[u8]) -> Self {
assert_eq!(key.len(), Self::KEY_LEN);
let mut ek: [__m128i; 28] = core::mem::zeroed();
let mut temp1 = _mm_loadu_si128(key.as_ptr() as *const __m128i);
let mut temp2: __m128i = core::mem::zeroed();
let mut temp3 = _mm_loadu_si128(key.as_ptr().offset(16) as *const __m128i);
ek[0] = temp1;
ek[1] = temp3;
temp2 = _mm_aeskeygenassist_si128(temp3, 0x1);
aes256_keyround_1!(temp1, temp2);
ek[2] = temp1;
aes256_keyround_2!(temp1, temp3);
ek[3] = temp3;
temp2 = _mm_aeskeygenassist_si128(temp3, 0x02);
aes256_keyround_1!(temp1, temp2);
ek[4] = temp1;
aes256_keyround_2!(temp1, temp3);
ek[5] = temp3;
temp2 = _mm_aeskeygenassist_si128(temp3, 0x04);
aes256_keyround_1!(temp1, temp2);
ek[6] = temp1;
aes256_keyround_2!(temp1, temp3);
ek[7] = temp3;
temp2 = _mm_aeskeygenassist_si128(temp3, 0x08);
aes256_keyround_1!(temp1, temp2);
ek[8] = temp1;
aes256_keyround_2!(temp1, temp3);
ek[9] = temp3;
temp2 = _mm_aeskeygenassist_si128(temp3, 0x10);
aes256_keyround_1!(temp1, temp2);
ek[10] = temp1;
aes256_keyround_2!(temp1, temp3);
ek[11] = temp3;
temp2 = _mm_aeskeygenassist_si128(temp3, 0x20);
aes256_keyround_1!(temp1, temp2);
ek[12] = temp1;
aes256_keyround_2!(temp1, temp3);
ek[13] = temp3;
temp2 = _mm_aeskeygenassist_si128(temp3, 0x40);
aes256_keyround_1!(temp1, temp2);
ek[14] = temp1;
ek[15] = _mm_aesimc_si128(ek[13]);
ek[16] = _mm_aesimc_si128(ek[12]);
ek[17] = _mm_aesimc_si128(ek[11]);
ek[18] = _mm_aesimc_si128(ek[10]);
ek[19] = _mm_aesimc_si128(ek[9]);
ek[20] = _mm_aesimc_si128(ek[8]);
ek[21] = _mm_aesimc_si128(ek[7]);
ek[22] = _mm_aesimc_si128(ek[6]);
ek[23] = _mm_aesimc_si128(ek[5]);
ek[24] = _mm_aesimc_si128(ek[4]);
ek[25] = _mm_aesimc_si128(ek[3]);
ek[26] = _mm_aesimc_si128(ek[2]);
ek[27] = _mm_aesimc_si128(ek[1]);
Self { ek }
}
#[inline(always)]
pub fn encrypt(&self, block: &mut [u8]) {
unsafe { self.encrypt_simd(block) }
}
#[target_feature(enable = "sse2,aes")]
unsafe fn encrypt_simd(&self, block: &mut [u8]) {
debug_assert_eq!(block.len(), Self::BLOCK_LEN);
let mut m = _mm_loadu_si128(block.as_ptr() as *const __m128i);
m = _mm_xor_si128(m, self.ek[0]);
m = _mm_aesenc_si128(m, self.ek[1]);
m = _mm_aesenc_si128(m, self.ek[2]);
m = _mm_aesenc_si128(m, self.ek[3]);
m = _mm_aesenc_si128(m, self.ek[4]);
m = _mm_aesenc_si128(m, self.ek[5]);
m = _mm_aesenc_si128(m, self.ek[6]);
m = _mm_aesenc_si128(m, self.ek[7]);
m = _mm_aesenc_si128(m, self.ek[8]);
m = _mm_aesenc_si128(m, self.ek[9]);
m = _mm_aesenc_si128(m, self.ek[10]);
m = _mm_aesenc_si128(m, self.ek[11]);
m = _mm_aesenc_si128(m, self.ek[12]);
m = _mm_aesenc_si128(m, self.ek[13]);
m = _mm_aesenclast_si128(m, self.ek[14]);
_mm_storeu_si128(block.as_mut_ptr() as *mut __m128i, m);
}
#[inline(always)]
pub fn decrypt(&self, block: &mut [u8]) {
unsafe { self.decrypt_simd(block) }
}
#[target_feature(enable = "sse2,aes")]
unsafe fn decrypt_simd(&self, block: &mut [u8]) {
debug_assert_eq!(block.len(), Self::BLOCK_LEN);
let mut m = _mm_loadu_si128(block.as_ptr() as *const __m128i);
m = _mm_xor_si128(m, self.ek[14]);
m = _mm_aesdec_si128(m, self.ek[15]);
m = _mm_aesdec_si128(m, self.ek[16]);
m = _mm_aesdec_si128(m, self.ek[17]);
m = _mm_aesdec_si128(m, self.ek[18]);
m = _mm_aesdec_si128(m, self.ek[19]);
m = _mm_aesdec_si128(m, self.ek[20]);
m = _mm_aesdec_si128(m, self.ek[21]);
m = _mm_aesdec_si128(m, self.ek[22]);
m = _mm_aesdec_si128(m, self.ek[23]);
m = _mm_aesdec_si128(m, self.ek[24]);
m = _mm_aesdec_si128(m, self.ek[25]);
m = _mm_aesdec_si128(m, self.ek[26]);
m = _mm_aesdec_si128(m, self.ek[27]);
m = _mm_aesdeclast_si128(m, self.ek[0]);
_mm_storeu_si128(block.as_mut_ptr() as *mut __m128i, m);
}
}
#[test]
fn test_example_vectors_aesni() {
// Appendix C – Example Vectors
{
// AES 128
let key = hex::decode("000102030405060708090a0b0c0d0e0f").unwrap();
let plaintext = hex::decode("00112233445566778899aabbccddeeff").unwrap();
let cipher = Aes128::new(&key);
let mut ciphertext = plaintext.clone();
cipher.encrypt(&mut ciphertext);
assert_eq!(
&ciphertext[..],
&hex::decode("69c4e0d86a7b0430d8cdb78070b4c55a").unwrap()[..]
);
let mut cleartext = ciphertext.clone();
cipher.decrypt(&mut cleartext);
assert_eq!(&cleartext[..], &plaintext[..]);
}
{
// AES 192
let key = hex::decode("000102030405060708090a0b0c0d0e0f1011121314151617").unwrap();
let plaintext = hex::decode("00112233445566778899aabbccddeeff").unwrap();
let cipher = Aes192::new(&key);
let mut ciphertext = plaintext.clone();
cipher.encrypt(&mut ciphertext);
assert_eq!(
&ciphertext[..],
&hex::decode("dda97ca4864cdfe06eaf70a0ec0d7191").unwrap()[..]
);
let mut cleartext = ciphertext.clone();
cipher.decrypt(&mut cleartext);
assert_eq!(&cleartext[..], &plaintext[..]);
}
{
// AES 256
let key = hex::decode("000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f")
.unwrap();
let plaintext = hex::decode("00112233445566778899aabbccddeeff").unwrap();
let cipher = Aes256::new(&key);
let mut ciphertext = plaintext.clone();
cipher.encrypt(&mut ciphertext);
assert_eq!(
&ciphertext[..],
&hex::decode("8ea2b7ca516745bfeafc49904b496089").unwrap()[..]
);
let mut cleartext = ciphertext.clone();
cipher.decrypt(&mut cleartext);
assert_eq!(&cleartext[..], &plaintext[..]);
}
}