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-rw-r--r--engines/ccgost/gosthash.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/engines/ccgost/gosthash.c b/engines/ccgost/gosthash.c
index 8c278aa6452e..91b2ce8829d8 100644
--- a/engines/ccgost/gosthash.c
+++ b/engines/ccgost/gosthash.c
@@ -180,8 +180,6 @@ int start_hash(gost_hash_ctx *ctx)
*/
int hash_block(gost_hash_ctx *ctx,const byte *block, size_t length)
{
- const byte *curptr=block;
- const byte *barrier=block+(length-32);/* Last byte we can safely hash*/
if (ctx->left)
{
/*There are some bytes from previous step*/
@@ -196,24 +194,25 @@ int hash_block(gost_hash_ctx *ctx,const byte *block, size_t length)
{
return 1;
}
- curptr=block+add_bytes;
+ block+=add_bytes;
+ length-=add_bytes;
hash_step(ctx->cipher_ctx,ctx->H,ctx->remainder);
add_blocks(32,ctx->S,ctx->remainder);
ctx->len+=32;
ctx->left=0;
}
- while (curptr<=barrier)
+ while (length>=32)
{
- hash_step(ctx->cipher_ctx,ctx->H,curptr);
+ hash_step(ctx->cipher_ctx,ctx->H,block);
- add_blocks(32,ctx->S,curptr);
+ add_blocks(32,ctx->S,block);
ctx->len+=32;
- curptr+=32;
+ block+=32;
+ length-=32;
}
- if (curptr!=block+length)
+ if (length)
{
- ctx->left=block+length-curptr;
- memcpy(ctx->remainder,curptr,ctx->left);
+ memcpy(ctx->remainder,block,ctx->left=length);
}
return 1;
}