fix some hash ub

1 files changed, 2 insertions, 2 deletions

diff --git a/src/hash/blake2.c b/src/hash/blake2.c
index 61c79ca..9507c96 100644
--- a/src/hash/blake2.c
+++ b/src/hash/blake2.c
@@ -231,7 +231,7 @@ void blake2b_final(struct blake2b_hash* hash, char* out_stream){
 

   blake2b_round(hash, 1);

 

-  for(int i = 0; i != hash->digest_len; i++)sprintf(out_stream, "%s%02x", out_stream, (((uint8_t*)hash->hash)[i]));

+  for(int i = 0; i != hash->digest_len; i++)sprintf(out_stream + i * 2, "%02x", (((uint8_t*)hash->hash)[i]));

     

   memcpy(hash, &old_hash, sizeof * hash);

   memcpy(hash->buffer, old, bs_2);

@@ -363,7 +363,7 @@ void blake2s_final(struct blake2s_hash* hash, char* out_stream){
 

   blake2s_round(hash, 1);

 

-  for(int i = 0; i != hash->digest_len; i++)sprintf(out_stream, "%s%02x", out_stream, (((uint8_t*)hash->hash)[i]));

+  for(int i = 0; i != hash->digest_len; i++)sprintf(out_stream + i * 2, "%02x", (((uint8_t*)hash->hash)[i]));

     

   memcpy(hash, &old_hash, sizeof * hash);

   memcpy(hash->buffer, old, bs);