+ fix hmac-sha256

[avr-crypto-lib.git] / hmac-sha256.c

diff --git a/hmac-sha256.c b/hmac-sha256.c
index 3483f1224957cf5902244420328873c2d365d550..e6fe3bc5bf18c1778aef59bcaa41f90b1cd61b69 100644 (file)
--- a/hmac-sha256.c
+++ b/hmac-sha256.c
@@ -79,6 +79,8 @@ void hmac_sha256(void* dest, void* key, uint16_t kl, void* msg, uint64_t ml){ /*
        uint8_t i;
        uint8_t buffer[SHA256_BLOCK_BITS/8];
        
+       memset(buffer, 0, SHA256_BLOCK_BITS/8);
+       
        /* if key is larger than a block we have to hash it*/
        if (kl > SHA256_BLOCK_BITS){
                sha256((void*)buffer, key, kl);
@@ -101,9 +103,9 @@ void hmac_sha256(void* dest, void* key, uint16_t kl, void* msg, uint64_t ml){ /*
        for (i=0; i<SHA256_BLOCK_BITS/8; ++i){
                buffer[i] ^= IPAD ^ OPAD;
        }
-       sha265_ctx2hash(dest, &s); /* save inner hash temporary to dest */
+       sha256_ctx2hash(dest, &s); /* save inner hash temporary to dest */
        sha256_init(&s);
        sha256_nextBlock(&s, buffer);
        sha256_lastBlock(&s, dest, SHA256_HASH_BITS);
-       sha265_ctx2hash(dest, &s);
+       sha256_ctx2hash(dest, &s);
 }