diff options
Diffstat (limited to 'third_party/bearssl/src/aes_x86ni_cbcdec.c')
| -rw-r--r-- | third_party/bearssl/src/aes_x86ni_cbcdec.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/third_party/bearssl/src/aes_x86ni_cbcdec.c b/third_party/bearssl/src/aes_x86ni_cbcdec.c new file mode 100644 index 0000000..862b1b5 --- /dev/null +++ b/third_party/bearssl/src/aes_x86ni_cbcdec.c @@ -0,0 +1,223 @@ +/* + * Copyright (c) 2017 Thomas Pornin <[email protected]> + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#define BR_ENABLE_INTRINSICS 1 +#include "inner.h" + +#if BR_AES_X86NI + +/* see bearssl_block.h */ +const br_block_cbcdec_class * +br_aes_x86ni_cbcdec_get_vtable(void) +{ + return br_aes_x86ni_supported() ? &br_aes_x86ni_cbcdec_vtable : NULL; +} + +/* see bearssl_block.h */ +void +br_aes_x86ni_cbcdec_init(br_aes_x86ni_cbcdec_keys *ctx, + const void *key, size_t len) +{ + ctx->vtable = &br_aes_x86ni_cbcdec_vtable; + ctx->num_rounds = br_aes_x86ni_keysched_dec(ctx->skey.skni, key, len); +} + +BR_TARGETS_X86_UP + +/* see bearssl_block.h */ +BR_TARGET("sse2,aes") +void +br_aes_x86ni_cbcdec_run(const br_aes_x86ni_cbcdec_keys *ctx, + void *iv, void *data, size_t len) +{ + unsigned char *buf; + unsigned num_rounds; + __m128i sk[15], ivx; + unsigned u; + + buf = data; + ivx = _mm_loadu_si128(iv); + num_rounds = ctx->num_rounds; + for (u = 0; u <= num_rounds; u ++) { + sk[u] = _mm_loadu_si128((void *)(ctx->skey.skni + (u << 4))); + } + while (len > 0) { + __m128i x0, x1, x2, x3, e0, e1, e2, e3; + + x0 = _mm_loadu_si128((void *)(buf + 0)); + if (len >= 64) { + x1 = _mm_loadu_si128((void *)(buf + 16)); + x2 = _mm_loadu_si128((void *)(buf + 32)); + x3 = _mm_loadu_si128((void *)(buf + 48)); + } else { + x0 = _mm_loadu_si128((void *)(buf + 0)); + if (len >= 32) { + x1 = _mm_loadu_si128((void *)(buf + 16)); + if (len >= 48) { + x2 = _mm_loadu_si128( + (void *)(buf + 32)); + x3 = x2; + } else { + x2 = x0; + x3 = x1; + } + } else { + x1 = x0; + x2 = x0; + x3 = x0; + } + } + e0 = x0; + e1 = x1; + e2 = x2; + e3 = x3; + x0 = _mm_xor_si128(x0, sk[0]); + x1 = _mm_xor_si128(x1, sk[0]); + x2 = _mm_xor_si128(x2, sk[0]); + x3 = _mm_xor_si128(x3, sk[0]); + x0 = _mm_aesdec_si128(x0, sk[1]); + x1 = _mm_aesdec_si128(x1, sk[1]); + x2 = _mm_aesdec_si128(x2, sk[1]); + x3 = _mm_aesdec_si128(x3, sk[1]); + x0 = _mm_aesdec_si128(x0, sk[2]); + x1 = _mm_aesdec_si128(x1, sk[2]); + x2 = _mm_aesdec_si128(x2, sk[2]); + x3 = _mm_aesdec_si128(x3, sk[2]); + x0 = _mm_aesdec_si128(x0, sk[3]); + x1 = _mm_aesdec_si128(x1, sk[3]); + x2 = _mm_aesdec_si128(x2, sk[3]); + x3 = _mm_aesdec_si128(x3, sk[3]); + x0 = _mm_aesdec_si128(x0, sk[4]); + x1 = _mm_aesdec_si128(x1, sk[4]); + x2 = _mm_aesdec_si128(x2, sk[4]); + x3 = _mm_aesdec_si128(x3, sk[4]); + x0 = _mm_aesdec_si128(x0, sk[5]); + x1 = _mm_aesdec_si128(x1, sk[5]); + x2 = _mm_aesdec_si128(x2, sk[5]); + x3 = _mm_aesdec_si128(x3, sk[5]); + x0 = _mm_aesdec_si128(x0, sk[6]); + x1 = _mm_aesdec_si128(x1, sk[6]); + x2 = _mm_aesdec_si128(x2, sk[6]); + x3 = _mm_aesdec_si128(x3, sk[6]); + x0 = _mm_aesdec_si128(x0, sk[7]); + x1 = _mm_aesdec_si128(x1, sk[7]); + x2 = _mm_aesdec_si128(x2, sk[7]); + x3 = _mm_aesdec_si128(x3, sk[7]); + x0 = _mm_aesdec_si128(x0, sk[8]); + x1 = _mm_aesdec_si128(x1, sk[8]); + x2 = _mm_aesdec_si128(x2, sk[8]); + x3 = _mm_aesdec_si128(x3, sk[8]); + x0 = _mm_aesdec_si128(x0, sk[9]); + x1 = _mm_aesdec_si128(x1, sk[9]); + x2 = _mm_aesdec_si128(x2, sk[9]); + x3 = _mm_aesdec_si128(x3, sk[9]); + if (num_rounds == 10) { + x0 = _mm_aesdeclast_si128(x0, sk[10]); + x1 = _mm_aesdeclast_si128(x1, sk[10]); + x2 = _mm_aesdeclast_si128(x2, sk[10]); + x3 = _mm_aesdeclast_si128(x3, sk[10]); + } else if (num_rounds == 12) { + x0 = _mm_aesdec_si128(x0, sk[10]); + x1 = _mm_aesdec_si128(x1, sk[10]); + x2 = _mm_aesdec_si128(x2, sk[10]); + x3 = _mm_aesdec_si128(x3, sk[10]); + x0 = _mm_aesdec_si128(x0, sk[11]); + x1 = _mm_aesdec_si128(x1, sk[11]); + x2 = _mm_aesdec_si128(x2, sk[11]); + x3 = _mm_aesdec_si128(x3, sk[11]); + x0 = _mm_aesdeclast_si128(x0, sk[12]); + x1 = _mm_aesdeclast_si128(x1, sk[12]); + x2 = _mm_aesdeclast_si128(x2, sk[12]); + x3 = _mm_aesdeclast_si128(x3, sk[12]); + } else { + x0 = _mm_aesdec_si128(x0, sk[10]); + x1 = _mm_aesdec_si128(x1, sk[10]); + x2 = _mm_aesdec_si128(x2, sk[10]); + x3 = _mm_aesdec_si128(x3, sk[10]); + x0 = _mm_aesdec_si128(x0, sk[11]); + x1 = _mm_aesdec_si128(x1, sk[11]); + x2 = _mm_aesdec_si128(x2, sk[11]); + x3 = _mm_aesdec_si128(x3, sk[11]); + x0 = _mm_aesdec_si128(x0, sk[12]); + x1 = _mm_aesdec_si128(x1, sk[12]); + x2 = _mm_aesdec_si128(x2, sk[12]); + x3 = _mm_aesdec_si128(x3, sk[12]); + x0 = _mm_aesdec_si128(x0, sk[13]); + x1 = _mm_aesdec_si128(x1, sk[13]); + x2 = _mm_aesdec_si128(x2, sk[13]); + x3 = _mm_aesdec_si128(x3, sk[13]); + x0 = _mm_aesdeclast_si128(x0, sk[14]); + x1 = _mm_aesdeclast_si128(x1, sk[14]); + x2 = _mm_aesdeclast_si128(x2, sk[14]); + x3 = _mm_aesdeclast_si128(x3, sk[14]); + } + x0 = _mm_xor_si128(x0, ivx); + x1 = _mm_xor_si128(x1, e0); + x2 = _mm_xor_si128(x2, e1); + x3 = _mm_xor_si128(x3, e2); + ivx = e3; + _mm_storeu_si128((void *)(buf + 0), x0); + if (len >= 64) { + _mm_storeu_si128((void *)(buf + 16), x1); + _mm_storeu_si128((void *)(buf + 32), x2); + _mm_storeu_si128((void *)(buf + 48), x3); + buf += 64; + len -= 64; + } else { + if (len >= 32) { + _mm_storeu_si128((void *)(buf + 16), x1); + if (len >= 48) { + _mm_storeu_si128( + (void *)(buf + 32), x2); + } + } + break; + } + } + _mm_storeu_si128(iv, ivx); +} + +BR_TARGETS_X86_DOWN + +/* see bearssl_block.h */ +const br_block_cbcdec_class br_aes_x86ni_cbcdec_vtable = { + sizeof(br_aes_x86ni_cbcdec_keys), + 16, + 4, + (void (*)(const br_block_cbcdec_class **, const void *, size_t)) + &br_aes_x86ni_cbcdec_init, + (void (*)(const br_block_cbcdec_class *const *, void *, void *, size_t)) + &br_aes_x86ni_cbcdec_run +}; + +#else + +/* see bearssl_block.h */ +const br_block_cbcdec_class * +br_aes_x86ni_cbcdec_get_vtable(void) +{ + return NULL; +} + +#endif |