diff options
| -rw-r--r-- | gost_grasshopper_cipher.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/gost_grasshopper_cipher.c b/gost_grasshopper_cipher.c index 7ae50f5..df58097 100644 --- a/gost_grasshopper_cipher.c +++ b/gost_grasshopper_cipher.c @@ -771,7 +771,7 @@ int gost_grasshopper_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, unsigned char adjusted_iv[16]; unsigned char seq[8]; - int j; + int j, carry; if (mode != EVP_CIPH_CTR_MODE) return -1; @@ -799,10 +799,9 @@ int gost_grasshopper_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, (const unsigned char *)seq) > 0) { memset(adjusted_iv, 0, 16); memcpy(adjusted_iv, EVP_CIPHER_CTX_original_iv(ctx), 8); - for(j=7; j>=0; j--) + for(j=7,carry=0; j>=0; j--) { - int adj_byte, carry = 0; - adj_byte = adjusted_iv[j]+seq[j]+carry; + int adj_byte = adjusted_iv[j]+seq[j]+carry; carry = (adj_byte > 255) ? 1 : 0; adjusted_iv[j] = adj_byte & 0xFF; } |