| use super::{arch::*, utils::*}; |
| use crate::{Block, Block8}; |
| use cipher::inout::InOut; |
| use core::mem; |
| |
| /// AES-128 round keys |
| pub(super) type RoundKeys = [__m128i; 11]; |
| |
| #[inline] |
| #[target_feature(enable = "aes")] |
| pub(super) unsafe fn encrypt1(keys: &RoundKeys, block: InOut<'_, '_, Block>) { |
| let (in_ptr, out_ptr) = block.into_raw(); |
| let mut b = _mm_loadu_si128(in_ptr as *const __m128i); |
| b = _mm_xor_si128(b, keys[0]); |
| b = _mm_aesenc_si128(b, keys[1]); |
| b = _mm_aesenc_si128(b, keys[2]); |
| b = _mm_aesenc_si128(b, keys[3]); |
| b = _mm_aesenc_si128(b, keys[4]); |
| b = _mm_aesenc_si128(b, keys[5]); |
| b = _mm_aesenc_si128(b, keys[6]); |
| b = _mm_aesenc_si128(b, keys[7]); |
| b = _mm_aesenc_si128(b, keys[8]); |
| b = _mm_aesenc_si128(b, keys[9]); |
| b = _mm_aesenclast_si128(b, keys[10]); |
| _mm_storeu_si128(out_ptr as *mut __m128i, b); |
| } |
| |
| #[inline] |
| #[target_feature(enable = "aes")] |
| pub(super) unsafe fn encrypt8(keys: &RoundKeys, blocks: InOut<'_, '_, Block8>) { |
| let (in_ptr, out_ptr) = blocks.into_raw(); |
| let mut b = load8(in_ptr); |
| xor8(&mut b, keys[0]); |
| aesenc8(&mut b, keys[1]); |
| aesenc8(&mut b, keys[2]); |
| aesenc8(&mut b, keys[3]); |
| aesenc8(&mut b, keys[4]); |
| aesenc8(&mut b, keys[5]); |
| aesenc8(&mut b, keys[6]); |
| aesenc8(&mut b, keys[7]); |
| aesenc8(&mut b, keys[8]); |
| aesenc8(&mut b, keys[9]); |
| aesenclast8(&mut b, keys[10]); |
| store8(out_ptr, b); |
| } |
| |
| #[inline] |
| #[target_feature(enable = "aes")] |
| pub(super) unsafe fn decrypt1(keys: &RoundKeys, block: InOut<'_, '_, Block>) { |
| let (in_ptr, out_ptr) = block.into_raw(); |
| let mut b = _mm_loadu_si128(in_ptr as *const __m128i); |
| b = _mm_xor_si128(b, keys[10]); |
| b = _mm_aesdec_si128(b, keys[9]); |
| b = _mm_aesdec_si128(b, keys[8]); |
| b = _mm_aesdec_si128(b, keys[7]); |
| b = _mm_aesdec_si128(b, keys[6]); |
| b = _mm_aesdec_si128(b, keys[5]); |
| b = _mm_aesdec_si128(b, keys[4]); |
| b = _mm_aesdec_si128(b, keys[3]); |
| b = _mm_aesdec_si128(b, keys[2]); |
| b = _mm_aesdec_si128(b, keys[1]); |
| b = _mm_aesdeclast_si128(b, keys[0]); |
| _mm_storeu_si128(out_ptr as *mut __m128i, b); |
| } |
| |
| #[inline] |
| #[target_feature(enable = "aes")] |
| pub(super) unsafe fn decrypt8(keys: &RoundKeys, blocks: InOut<'_, '_, Block8>) { |
| let (in_ptr, out_ptr) = blocks.into_raw(); |
| let mut b = load8(in_ptr); |
| xor8(&mut b, keys[10]); |
| aesdec8(&mut b, keys[9]); |
| aesdec8(&mut b, keys[8]); |
| aesdec8(&mut b, keys[7]); |
| aesdec8(&mut b, keys[6]); |
| aesdec8(&mut b, keys[5]); |
| aesdec8(&mut b, keys[4]); |
| aesdec8(&mut b, keys[3]); |
| aesdec8(&mut b, keys[2]); |
| aesdec8(&mut b, keys[1]); |
| aesdeclast8(&mut b, keys[0]); |
| store8(out_ptr, b); |
| } |
| |
| macro_rules! expand_round { |
| ($keys:expr, $pos:expr, $round:expr) => { |
| let mut t1 = $keys[$pos - 1]; |
| let mut t2; |
| let mut t3; |
| |
| t2 = _mm_aeskeygenassist_si128(t1, $round); |
| t2 = _mm_shuffle_epi32(t2, 0xff); |
| t3 = _mm_slli_si128(t1, 0x4); |
| t1 = _mm_xor_si128(t1, t3); |
| t3 = _mm_slli_si128(t3, 0x4); |
| t1 = _mm_xor_si128(t1, t3); |
| t3 = _mm_slli_si128(t3, 0x4); |
| t1 = _mm_xor_si128(t1, t3); |
| t1 = _mm_xor_si128(t1, t2); |
| |
| $keys[$pos] = t1; |
| }; |
| } |
| |
| #[inline] |
| #[target_feature(enable = "aes")] |
| pub(super) unsafe fn expand_key(key: &[u8; 16]) -> RoundKeys { |
| // SAFETY: `RoundKeys` is a `[__m128i; 11]` which can be initialized |
| // with all zeroes. |
| let mut keys: RoundKeys = mem::zeroed(); |
| |
| let k = _mm_loadu_si128(key.as_ptr() as *const __m128i); |
| keys[0] = k; |
| |
| expand_round!(keys, 1, 0x01); |
| expand_round!(keys, 2, 0x02); |
| expand_round!(keys, 3, 0x04); |
| expand_round!(keys, 4, 0x08); |
| expand_round!(keys, 5, 0x10); |
| expand_round!(keys, 6, 0x20); |
| expand_round!(keys, 7, 0x40); |
| expand_round!(keys, 8, 0x80); |
| expand_round!(keys, 9, 0x1B); |
| expand_round!(keys, 10, 0x36); |
| |
| keys |
| } |
| |
| #[inline] |
| #[target_feature(enable = "aes")] |
| pub(super) unsafe fn inv_expanded_keys(keys: &RoundKeys) -> RoundKeys { |
| [ |
| keys[0], |
| _mm_aesimc_si128(keys[1]), |
| _mm_aesimc_si128(keys[2]), |
| _mm_aesimc_si128(keys[3]), |
| _mm_aesimc_si128(keys[4]), |
| _mm_aesimc_si128(keys[5]), |
| _mm_aesimc_si128(keys[6]), |
| _mm_aesimc_si128(keys[7]), |
| _mm_aesimc_si128(keys[8]), |
| _mm_aesimc_si128(keys[9]), |
| keys[10], |
| ] |
| } |