diff options
| -rw-r--r-- | crypto/kdf/hkdf.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/crypto/kdf/hkdf.c b/crypto/kdf/hkdf.c index baaa16f0b7..ec6090ad6a 100644 --- a/crypto/kdf/hkdf.c +++ b/crypto/kdf/hkdf.c @@ -281,6 +281,7 @@ static unsigned char *HKDF_Expand(const EVP_MD *evp_md, unsigned char *okm, size_t okm_len) { HMAC_CTX *hmac; + unsigned char *ret = NULL; unsigned int i; @@ -330,11 +331,10 @@ static unsigned char *HKDF_Expand(const EVP_MD *evp_md, done_len += copy_len; } - - HMAC_CTX_free(hmac); - return okm; + ret = okm; err: + OPENSSL_cleanse(prev, sizeof(prev)); HMAC_CTX_free(hmac); - return NULL; + return ret; } |