1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
use super::{
arch::*,
utils::{aesdec8, aesdeclast8, aesenc8, aesenclast8, load8, store8, xor8, U128x8},
};
use crate::{Block, ParBlocks};
use cipher::{
consts::{U16, U24, U8},
generic_array::GenericArray,
BlockCipher, BlockDecrypt, BlockEncrypt, NewBlockCipher,
};
mod expand;
#[cfg(test)]
mod test_expand;
type RoundKeys = [__m128i; 13];
#[derive(Clone)]
pub struct Aes192 {
encrypt_keys: RoundKeys,
decrypt_keys: RoundKeys,
}
impl Aes192 {
#[inline(always)]
pub(crate) fn encrypt8(&self, mut blocks: U128x8) -> U128x8 {
#[inline]
#[target_feature(enable = "aes")]
unsafe fn aesni192_encrypt8(keys: &RoundKeys, blocks: &mut U128x8) {
xor8(blocks, keys[0]);
aesenc8(blocks, keys[1]);
aesenc8(blocks, keys[2]);
aesenc8(blocks, keys[3]);
aesenc8(blocks, keys[4]);
aesenc8(blocks, keys[5]);
aesenc8(blocks, keys[6]);
aesenc8(blocks, keys[7]);
aesenc8(blocks, keys[8]);
aesenc8(blocks, keys[9]);
aesenc8(blocks, keys[10]);
aesenc8(blocks, keys[11]);
aesenclast8(blocks, keys[12]);
}
unsafe { aesni192_encrypt8(&self.encrypt_keys, &mut blocks) };
blocks
}
#[inline(always)]
pub(crate) fn encrypt(&self, block: __m128i) -> __m128i {
#[inline]
#[target_feature(enable = "aes")]
unsafe fn aesni192_encrypt1(keys: &RoundKeys, mut block: __m128i) -> __m128i {
block = _mm_xor_si128(block, keys[0]);
block = _mm_aesenc_si128(block, keys[1]);
block = _mm_aesenc_si128(block, keys[2]);
block = _mm_aesenc_si128(block, keys[3]);
block = _mm_aesenc_si128(block, keys[4]);
block = _mm_aesenc_si128(block, keys[5]);
block = _mm_aesenc_si128(block, keys[6]);
block = _mm_aesenc_si128(block, keys[7]);
block = _mm_aesenc_si128(block, keys[8]);
block = _mm_aesenc_si128(block, keys[9]);
block = _mm_aesenc_si128(block, keys[10]);
block = _mm_aesenc_si128(block, keys[11]);
_mm_aesenclast_si128(block, keys[12])
}
unsafe { aesni192_encrypt1(&self.encrypt_keys, block) }
}
}
impl NewBlockCipher for Aes192 {
type KeySize = U24;
#[inline]
fn new(key: &GenericArray<u8, U24>) -> Self {
let key = unsafe { &*(key as *const _ as *const [u8; 24]) };
let (encrypt_keys, decrypt_keys) = expand::expand(key);
Self {
encrypt_keys,
decrypt_keys,
}
}
}
impl BlockCipher for Aes192 {
type BlockSize = U16;
type ParBlocks = U8;
}
impl BlockEncrypt for Aes192 {
#[inline]
fn encrypt_block(&self, block: &mut Block) {
#[allow(clippy::cast_ptr_alignment)]
unsafe {
let b = _mm_loadu_si128(block.as_ptr() as *const __m128i);
let b = self.encrypt(b);
_mm_storeu_si128(block.as_mut_ptr() as *mut __m128i, b);
}
}
#[inline]
fn encrypt_par_blocks(&self, blocks: &mut ParBlocks) {
let b = self.encrypt8(load8(blocks));
store8(blocks, b);
}
}
impl BlockDecrypt for Aes192 {
#[inline]
fn decrypt_block(&self, block: &mut Block) {
#[inline]
#[target_feature(enable = "aes")]
unsafe fn aes192_decrypt1(block: &mut Block, keys: &RoundKeys) {
#[allow(clippy::cast_ptr_alignment)]
let mut b = _mm_loadu_si128(block.as_ptr() as *const __m128i);
b = _mm_xor_si128(b, keys[12]);
b = _mm_aesdec_si128(b, keys[11]);
b = _mm_aesdec_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]);
#[allow(clippy::cast_ptr_alignment)]
_mm_storeu_si128(block.as_mut_ptr() as *mut __m128i, b);
}
unsafe { aes192_decrypt1(block, &self.decrypt_keys) }
}
#[inline]
fn decrypt_par_blocks(&self, blocks: &mut ParBlocks) {
#[inline]
#[target_feature(enable = "aes")]
unsafe fn aes192_decrypt8(blocks: &mut ParBlocks, keys: &RoundKeys) {
let mut b = load8(blocks);
xor8(&mut b, keys[12]);
aesdec8(&mut b, keys[11]);
aesdec8(&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(blocks, b);
}
unsafe { aes192_decrypt8(blocks, &self.decrypt_keys) }
}
}
opaque_debug::implement!(Aes192);