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Fix sm3 bug

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This commit is contained in:
Zhi Guan
2019-08-28 11:14:50 +08:00
parent 10726098b4
commit c4455c96ae
4 changed files with 5144 additions and 5142 deletions
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6
crypto/sm3/sm3.c
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@@ -163,11 +163,12 @@ int sm3_sm2_init(sm3_ctx_t *ctx, const char *id,
sm3_compute_id_digest(z, id, x, y);
sm3_init(ctx);
sm3_update(ctx, z, 32);
return 1;
}
void sm3_update(sm3_ctx_t *ctx, const unsigned char *data, size_t data_len)
{
size_t blocks = data_len / SM3_BLOCK_SIZE;
size_t blocks;
if (ctx->num) {
unsigned int left = SM3_BLOCK_SIZE - ctx->num;
@@ -177,13 +178,14 @@ void sm3_update(sm3_ctx_t *ctx, const unsigned char *data, size_t data_len)
return;
} else {
memcpy(ctx->block + ctx->num, data, left);
sm3_compress(ctx->digest, ctx->block);
sm3_compress_blocks(ctx->digest, ctx->block, 1);
ctx->nblocks++;
data += left;
data_len -= left;
}
}
blocks = data_len / SM3_BLOCK_SIZE;
sm3_compress_blocks(ctx->digest, data, blocks);
ctx->nblocks += blocks;
data += SM3_BLOCK_SIZE * blocks;