diff options
Diffstat (limited to 'src/crypto/isa-l/isa-l_crypto/mh_sha256/mh_sha256_finalize_base.c')
| -rw-r--r-- | src/crypto/isa-l/isa-l_crypto/mh_sha256/mh_sha256_finalize_base.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/crypto/isa-l/isa-l_crypto/mh_sha256/mh_sha256_finalize_base.c b/src/crypto/isa-l/isa-l_crypto/mh_sha256/mh_sha256_finalize_base.c new file mode 100644 index 000000000..6abb20688 --- /dev/null +++ b/src/crypto/isa-l/isa-l_crypto/mh_sha256/mh_sha256_finalize_base.c @@ -0,0 +1,121 @@ +/********************************************************************** + Copyright(c) 2011-2017 Intel Corporation All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + * Neither the name of Intel Corporation nor the names of its + contributors may be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +**********************************************************************/ + +/* + * mh_sha256_finalize_base.c contains the prototypes of mh_sha256_finalize_XXX + * and mh_sha256_tail_XXX. Default definitions are base type which generates + * mh_sha256_finalize_base and mh_sha256_tail_base. Other types are generated + * through different predefined macros by mh_sha256.c. + * mh_sha256_tail is used to calculate the last incomplete block of input + * data. mh_sha256_finalize is the mh_sha256_ctx wrapper of mh_sha256_tail. + */ +#ifndef MH_SHA256_FINALIZE_FUNCTION +#include <string.h> +#include "mh_sha256_internal.h" + +#define MH_SHA256_FINALIZE_FUNCTION mh_sha256_finalize_base +#define MH_SHA256_TAIL_FUNCTION mh_sha256_tail_base +#define MH_SHA256_BLOCK_FUNCTION mh_sha256_block_base +#define MH_SHA256_FINALIZE_SLVER +#endif + +void MH_SHA256_TAIL_FUNCTION(uint8_t * partial_buffer, uint32_t total_len, + uint32_t(*mh_sha256_segs_digests)[HASH_SEGS], + uint8_t * frame_buffer, uint32_t digests[SHA256_DIGEST_WORDS]) +{ + uint64_t partial_buffer_len, len_in_bit; + + partial_buffer_len = total_len % MH_SHA256_BLOCK_SIZE; + + // Padding the first block + partial_buffer[partial_buffer_len] = 0x80; + partial_buffer_len++; + memset(partial_buffer + partial_buffer_len, 0, + MH_SHA256_BLOCK_SIZE - partial_buffer_len); + + // Calculate the first block without total_length if padding needs 2 block + if (partial_buffer_len > (MH_SHA256_BLOCK_SIZE - 8)) { + MH_SHA256_BLOCK_FUNCTION(partial_buffer, mh_sha256_segs_digests, frame_buffer, + 1); + //Padding the second block + memset(partial_buffer, 0, MH_SHA256_BLOCK_SIZE); + } + //Padding the block + len_in_bit = to_be64((uint64_t) total_len * 8); + *(uint64_t *) (partial_buffer + MH_SHA256_BLOCK_SIZE - 8) = len_in_bit; + MH_SHA256_BLOCK_FUNCTION(partial_buffer, mh_sha256_segs_digests, frame_buffer, 1); + + //Calculate multi-hash SHA256 digests (segment digests as input message) + sha256_for_mh_sha256((uint8_t *) mh_sha256_segs_digests, digests, + 4 * SHA256_DIGEST_WORDS * HASH_SEGS); + + return; +} + +int MH_SHA256_FINALIZE_FUNCTION(struct mh_sha256_ctx *ctx, void *mh_sha256_digest) +{ + uint8_t i; + uint8_t *partial_block_buffer; + uint64_t total_len; + uint32_t(*mh_sha256_segs_digests)[HASH_SEGS]; + uint8_t *aligned_frame_buffer; + + if (ctx == NULL) + return MH_SHA256_CTX_ERROR_NULL; + + total_len = ctx->total_length; + partial_block_buffer = ctx->partial_block_buffer; + + /* mh_sha256 tail */ + aligned_frame_buffer = (uint8_t *) ALIGN_64(ctx->frame_buffer); + mh_sha256_segs_digests = (uint32_t(*)[HASH_SEGS]) ctx->mh_sha256_interim_digests; + + MH_SHA256_TAIL_FUNCTION(partial_block_buffer, total_len, mh_sha256_segs_digests, + aligned_frame_buffer, ctx->mh_sha256_digest); + + /* Output the digests of mh_sha256 */ + if (mh_sha256_digest != NULL) { + for (i = 0; i < SHA256_DIGEST_WORDS; i++) + ((uint32_t *) mh_sha256_digest)[i] = ctx->mh_sha256_digest[i]; + } + + return MH_SHA256_CTX_ERROR_NONE; +} + +#ifdef MH_SHA256_FINALIZE_SLVER +struct slver { + uint16_t snum; + uint8_t ver; + uint8_t core; +}; + +// Version info +struct slver mh_sha256_finalize_base_slver_000002bb; +struct slver mh_sha256_finalize_base_slver = { 0x02bb, 0x00, 0x00 }; +#endif |