1 /********************************************************************** 2 Copyright(c) 2011-2017 Intel Corporation All rights reserved. 3 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions 6 are met: 7 * Redistributions of source code must retain the above copyright 8 notice, this list of conditions and the following disclaimer. 9 * Redistributions in binary form must reproduce the above copyright 10 notice, this list of conditions and the following disclaimer in 11 the documentation and/or other materials provided with the 12 distribution. 13 * Neither the name of Intel Corporation nor the names of its 14 contributors may be used to endorse or promote products derived 15 from this software without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 **********************************************************************/ 29 30 /* 31 * mh_sha256_update_base.c contains the prototype of mh_sha256_update_XXX. 32 * Default definitions are base type which generates mh_sha256_update_base. 33 * Other types are generated through different predefined macros by mh_sha256.c. 34 */ 35 #ifndef MH_SHA256_UPDATE_FUNCTION 36 #include "mh_sha256_internal.h" 37 #include <string.h> 38 39 #define MH_SHA256_UPDATE_FUNCTION _mh_sha256_update_base 40 #define MH_SHA256_BLOCK_FUNCTION _mh_sha256_block_base 41 #define MH_SHA256_UPDATE_SLVER 42 #endif 43 44 int 45 MH_SHA256_UPDATE_FUNCTION(struct mh_sha256_ctx *ctx, const void *buffer, uint32_t len) 46 { 47 48 uint8_t *partial_block_buffer; 49 uint32_t partial_block_len; 50 uint32_t num_blocks; 51 uint32_t(*mh_sha256_segs_digests)[ISAL_HASH_SEGS]; 52 uint8_t *aligned_frame_buffer; 53 const uint8_t *input_data = (const uint8_t *) buffer; 54 55 if (ctx == NULL) 56 return ISAL_MH_SHA256_CTX_ERROR_NULL; 57 58 if (len == 0) 59 return ISAL_MH_SHA256_CTX_ERROR_NONE; 60 61 partial_block_len = ctx->total_length % ISAL_MH_SHA256_BLOCK_SIZE; 62 partial_block_buffer = ctx->partial_block_buffer; 63 aligned_frame_buffer = (uint8_t *) ALIGN_64(ctx->frame_buffer); 64 mh_sha256_segs_digests = (uint32_t(*)[ISAL_HASH_SEGS]) ctx->mh_sha256_interim_digests; 65 66 ctx->total_length += len; 67 // No enough input data for mh_sha256 calculation 68 if (len + partial_block_len < ISAL_MH_SHA256_BLOCK_SIZE) { 69 memcpy(partial_block_buffer + partial_block_len, input_data, len); 70 return ISAL_MH_SHA256_CTX_ERROR_NONE; 71 } 72 // mh_sha256 calculation for the previous partial block 73 if (partial_block_len != 0) { 74 memcpy(partial_block_buffer + partial_block_len, input_data, 75 ISAL_MH_SHA256_BLOCK_SIZE - partial_block_len); 76 // do one_block process 77 MH_SHA256_BLOCK_FUNCTION(partial_block_buffer, mh_sha256_segs_digests, 78 aligned_frame_buffer, 1); 79 input_data += ISAL_MH_SHA256_BLOCK_SIZE - partial_block_len; 80 len -= ISAL_MH_SHA256_BLOCK_SIZE - partial_block_len; 81 memset(partial_block_buffer, 0, ISAL_MH_SHA256_BLOCK_SIZE); 82 } 83 // Calculate mh_sha256 for the current blocks 84 num_blocks = len / ISAL_MH_SHA256_BLOCK_SIZE; 85 if (num_blocks > 0) { 86 // do num_blocks process 87 MH_SHA256_BLOCK_FUNCTION(input_data, mh_sha256_segs_digests, aligned_frame_buffer, 88 num_blocks); 89 len -= num_blocks * ISAL_MH_SHA256_BLOCK_SIZE; 90 input_data += num_blocks * ISAL_MH_SHA256_BLOCK_SIZE; 91 } 92 // Store the partial block 93 if (len != 0) { 94 memcpy(partial_block_buffer, input_data, len); 95 } 96 97 return ISAL_MH_SHA256_CTX_ERROR_NONE; 98 } 99 100 #ifdef MH_SHA256_UPDATE_SLVER 101 struct slver { 102 uint16_t snum; 103 uint8_t ver; 104 uint8_t core; 105 }; 106 107 // Version info 108 struct slver _mh_sha256_update_base_slver_000002ba; 109 struct slver _mh_sha256_update_base_slver = { 0x02ba, 0x00, 0x00 }; 110 #endif 111