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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
MH_SHA256_UPDATE_FUNCTION(struct isal_mh_sha256_ctx * ctx,const void * buffer,uint32_t len)45 MH_SHA256_UPDATE_FUNCTION(struct isal_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