fix some hash ub

1 files changed, 6 insertions, 6 deletions

diff --git a/src/hash/blake.c b/src/hash/blake.c
index c6d73ad..76b6680 100644
--- a/src/hash/blake.c
+++ b/src/hash/blake.c
@@ -215,7 +215,7 @@ void blake256_final(struct blake256_hash* hash, char* out_stream){
   _blake256_final(hash, out_stream);

 

   for(int i = 0; i != 8; i++){

-    sprintf(out_stream, "%s%08x",out_stream,(hash->hash)[i]);

+    sprintf(out_stream + i * 8, "%08x",(hash->hash)[i]);

   }

 

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

@@ -234,7 +234,7 @@ void blake224_final(struct blake256_hash* hash, char* out_stream){
   _blake256_final(hash, out_stream);

 

   for(int i = 0; i != 7; i++){

-    sprintf(out_stream, "%s%08x",out_stream,(hash->hash)[i]);

+    sprintf(out_stream + i * 8, "%08x",(hash->hash)[i]);

   }

   

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

@@ -427,8 +427,8 @@ void blake512_final(struct blake512_hash* hash, char* out_stream){
   _blake512_final(hash, out_stream);

 

   for(int i = 0; i != 8; i++){

-        sprintf(out_stream, "%s%016llx",out_stream, (hash->hash)[i]);

-    }

+    sprintf(out_stream + 16 * i, "%016llx", (hash->hash)[i]);

+  }

 

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

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

@@ -454,8 +454,8 @@ void blake384_final(struct blake384_hash* hash, char* out_stream){
   _blake512_final(hash, out_stream);

 

   for(int i = 0; i != 6; i++){

-        sprintf(out_stream, "%s%016llx",out_stream, (hash->hash)[i]);

-    }

+    sprintf(out_stream + 16 * i, "%016llx", (hash->hash)[i]);

+  }

 

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

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