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Update SM3

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Safe call to sm3_compress_blocks
This commit is contained in:
Zhi Guan
2022-10-11 16:34:13 +08:00
parent 6ff290de0e
commit c6c0162c25
2 changed files with 7 additions and 6 deletions
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12
src/sm3.c
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@@ -294,7 +294,6 @@ void sm3_compress_blocks(uint32_t digest[8], const uint8_t *data, size_t blocks)
}
}
void sm3_init(SM3_CTX *ctx)
{
memset(ctx, 0, sizeof(*ctx));
@@ -321,7 +320,6 @@ void sm3_update(SM3_CTX *ctx, const uint8_t *data, size_t data_len)
ctx->num += data_len;
return;
} else {
memcpy(ctx->block + ctx->num, data, left);
sm3_compress_blocks(ctx->digest, ctx->block, 1);
ctx->nblocks++;
data += left;
@@ -330,10 +328,12 @@ void sm3_update(SM3_CTX *ctx, const uint8_t *data, size_t data_len)
}
blocks = data_len / SM3_BLOCK_SIZE;
sm3_compress_blocks(ctx->digest, data, blocks);
ctx->nblocks += blocks;
data += SM3_BLOCK_SIZE * blocks;
data_len -= SM3_BLOCK_SIZE * blocks;
if (blocks) {
sm3_compress_blocks(ctx->digest, data, blocks);
ctx->nblocks += blocks;
data += SM3_BLOCK_SIZE * blocks;
data_len -= SM3_BLOCK_SIZE * blocks;
}
ctx->num = data_len;
if (data_len) {