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Bug 1400603 - freebl: Reorganize AES-GCM source code based on hw/sw i…
…mplementation, r=franziskus Reviewers: franziskus Reviewed By: franziskus Bug #: 1400603 Differential Revision: https://phabricator.services.mozilla.com/D65 --HG-- extra : histedit_source : c93d86bff9fb46d8487fbe164f24841aa9804f11
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/* This Source Code Form is subject to the terms of the Mozilla Public | ||
* License, v. 2.0. If a copy of the MPL was not distributed with this | ||
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | ||
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#ifdef FREEBL_NO_DEPEND | ||
#include "stubs.h" | ||
#endif | ||
#include "rijndael.h" | ||
#include "secerr.h" | ||
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#include <wmmintrin.h> /* aes-ni */ | ||
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#define EXPAND_KEY128(k, rcon, res) \ | ||
tmp_key = _mm_aeskeygenassist_si128(k, rcon); \ | ||
tmp_key = _mm_shuffle_epi32(tmp_key, 0xFF); \ | ||
tmp = _mm_xor_si128(k, _mm_slli_si128(k, 4)); \ | ||
tmp = _mm_xor_si128(tmp, _mm_slli_si128(tmp, 4)); \ | ||
tmp = _mm_xor_si128(tmp, _mm_slli_si128(tmp, 4)); \ | ||
res = _mm_xor_si128(tmp, tmp_key) | ||
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static void | ||
native_key_expansion128(AESContext *cx, const unsigned char *key) | ||
{ | ||
__m128i *keySchedule = cx->keySchedule; | ||
pre_align __m128i tmp_key post_align; | ||
pre_align __m128i tmp post_align; | ||
keySchedule[0] = _mm_loadu_si128((__m128i *)key); | ||
EXPAND_KEY128(keySchedule[0], 0x01, keySchedule[1]); | ||
EXPAND_KEY128(keySchedule[1], 0x02, keySchedule[2]); | ||
EXPAND_KEY128(keySchedule[2], 0x04, keySchedule[3]); | ||
EXPAND_KEY128(keySchedule[3], 0x08, keySchedule[4]); | ||
EXPAND_KEY128(keySchedule[4], 0x10, keySchedule[5]); | ||
EXPAND_KEY128(keySchedule[5], 0x20, keySchedule[6]); | ||
EXPAND_KEY128(keySchedule[6], 0x40, keySchedule[7]); | ||
EXPAND_KEY128(keySchedule[7], 0x80, keySchedule[8]); | ||
EXPAND_KEY128(keySchedule[8], 0x1B, keySchedule[9]); | ||
EXPAND_KEY128(keySchedule[9], 0x36, keySchedule[10]); | ||
} | ||
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#define EXPAND_KEY192_PART1(res, k0, kt, rcon) \ | ||
tmp2 = _mm_slli_si128(k0, 4); \ | ||
tmp1 = _mm_xor_si128(k0, tmp2); \ | ||
tmp2 = _mm_slli_si128(tmp2, 4); \ | ||
tmp1 = _mm_xor_si128(_mm_xor_si128(tmp1, tmp2), _mm_slli_si128(tmp2, 4)); \ | ||
tmp2 = _mm_aeskeygenassist_si128(kt, rcon); \ | ||
res = _mm_xor_si128(tmp1, _mm_shuffle_epi32(tmp2, 0x55)) | ||
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#define EXPAND_KEY192_PART2(res, k1, k2) \ | ||
tmp2 = _mm_xor_si128(k1, _mm_slli_si128(k1, 4)); \ | ||
res = _mm_xor_si128(tmp2, _mm_shuffle_epi32(k2, 0xFF)) | ||
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#define EXPAND_KEY192(k0, res1, res2, res3, carry, rcon1, rcon2) \ | ||
EXPAND_KEY192_PART1(tmp3, k0, res1, rcon1); \ | ||
EXPAND_KEY192_PART2(carry, res1, tmp3); \ | ||
res1 = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(res1), \ | ||
_mm_castsi128_pd(tmp3), 0)); \ | ||
res2 = _mm_castpd_si128(_mm_shuffle_pd(_mm_castsi128_pd(tmp3), \ | ||
_mm_castsi128_pd(carry), 1)); \ | ||
EXPAND_KEY192_PART1(res3, tmp3, carry, rcon2) | ||
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static void | ||
native_key_expansion192(AESContext *cx, const unsigned char *key) | ||
{ | ||
__m128i *keySchedule = cx->keySchedule; | ||
pre_align __m128i tmp1 post_align; | ||
pre_align __m128i tmp2 post_align; | ||
pre_align __m128i tmp3 post_align; | ||
pre_align __m128i carry post_align; | ||
keySchedule[0] = _mm_loadu_si128((__m128i *)key); | ||
keySchedule[1] = _mm_loadu_si128((__m128i *)(key + 16)); | ||
EXPAND_KEY192(keySchedule[0], keySchedule[1], keySchedule[2], | ||
keySchedule[3], carry, 0x1, 0x2); | ||
EXPAND_KEY192_PART2(keySchedule[4], carry, keySchedule[3]); | ||
EXPAND_KEY192(keySchedule[3], keySchedule[4], keySchedule[5], | ||
keySchedule[6], carry, 0x4, 0x8); | ||
EXPAND_KEY192_PART2(keySchedule[7], carry, keySchedule[6]); | ||
EXPAND_KEY192(keySchedule[6], keySchedule[7], keySchedule[8], | ||
keySchedule[9], carry, 0x10, 0x20); | ||
EXPAND_KEY192_PART2(keySchedule[10], carry, keySchedule[9]); | ||
EXPAND_KEY192(keySchedule[9], keySchedule[10], keySchedule[11], | ||
keySchedule[12], carry, 0x40, 0x80); | ||
} | ||
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#define EXPAND_KEY256_PART(res, rconx, k1x, k2x, X) \ | ||
tmp_key = _mm_shuffle_epi32(_mm_aeskeygenassist_si128(k2x, rconx), X); \ | ||
tmp2 = _mm_slli_si128(k1x, 4); \ | ||
tmp1 = _mm_xor_si128(k1x, tmp2); \ | ||
tmp2 = _mm_slli_si128(tmp2, 4); \ | ||
tmp1 = _mm_xor_si128(_mm_xor_si128(tmp1, tmp2), _mm_slli_si128(tmp2, 4)); \ | ||
res = _mm_xor_si128(tmp1, tmp_key); | ||
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#define EXPAND_KEY256(res1, res2, k1, k2, rcon) \ | ||
EXPAND_KEY256_PART(res1, rcon, k1, k2, 0xFF); \ | ||
EXPAND_KEY256_PART(res2, 0x00, k2, res1, 0xAA) | ||
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static void | ||
native_key_expansion256(AESContext *cx, const unsigned char *key) | ||
{ | ||
__m128i *keySchedule = cx->keySchedule; | ||
pre_align __m128i tmp_key post_align; | ||
pre_align __m128i tmp1 post_align; | ||
pre_align __m128i tmp2 post_align; | ||
keySchedule[0] = _mm_loadu_si128((__m128i *)key); | ||
keySchedule[1] = _mm_loadu_si128((__m128i *)(key + 16)); | ||
EXPAND_KEY256(keySchedule[2], keySchedule[3], keySchedule[0], | ||
keySchedule[1], 0x01); | ||
EXPAND_KEY256(keySchedule[4], keySchedule[5], keySchedule[2], | ||
keySchedule[3], 0x02); | ||
EXPAND_KEY256(keySchedule[6], keySchedule[7], keySchedule[4], | ||
keySchedule[5], 0x04); | ||
EXPAND_KEY256(keySchedule[8], keySchedule[9], keySchedule[6], | ||
keySchedule[7], 0x08); | ||
EXPAND_KEY256(keySchedule[10], keySchedule[11], keySchedule[8], | ||
keySchedule[9], 0x10); | ||
EXPAND_KEY256(keySchedule[12], keySchedule[13], keySchedule[10], | ||
keySchedule[11], 0x20); | ||
EXPAND_KEY256_PART(keySchedule[14], 0x40, keySchedule[12], | ||
keySchedule[13], 0xFF); | ||
} | ||
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/* | ||
* AES key expansion using aes-ni instructions. | ||
*/ | ||
void | ||
rijndael_native_key_expansion(AESContext *cx, const unsigned char *key, | ||
unsigned int Nk) | ||
{ | ||
switch (Nk) { | ||
case 4: | ||
native_key_expansion128(cx, key); | ||
return; | ||
case 6: | ||
native_key_expansion192(cx, key); | ||
return; | ||
case 8: | ||
native_key_expansion256(cx, key); | ||
return; | ||
default: | ||
/* This shouldn't happen (checked by the caller). */ | ||
return; | ||
} | ||
} | ||
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void | ||
rijndael_native_encryptBlock(AESContext *cx, | ||
unsigned char *output, | ||
const unsigned char *input) | ||
{ | ||
int i; | ||
pre_align __m128i m post_align = _mm_loadu_si128((__m128i *)input); | ||
m = _mm_xor_si128(m, cx->keySchedule[0]); | ||
for (i = 1; i < cx->Nr; ++i) { | ||
m = _mm_aesenc_si128(m, cx->keySchedule[i]); | ||
} | ||
m = _mm_aesenclast_si128(m, cx->keySchedule[cx->Nr]); | ||
_mm_storeu_si128((__m128i *)output, m); | ||
} |
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