diff options
Diffstat (limited to 'src/common/crypto.c')
| -rw-r--r-- | src/common/crypto.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/common/crypto.c b/src/common/crypto.c index 913d1c26c9..86357b0a43 100644 --- a/src/common/crypto.c +++ b/src/common/crypto.c @@ -1906,11 +1906,14 @@ crypto_hmac_sha256(char *hmac_out, const char *key, size_t key_len, const char *msg, size_t msg_len) { + unsigned char *rv = NULL; /* If we've got OpenSSL >=0.9.8 we can use its hmac implementation. */ tor_assert(key_len < INT_MAX); tor_assert(msg_len < INT_MAX); - HMAC(EVP_sha256(), key, (int)key_len, (unsigned char*)msg, (int)msg_len, - (unsigned char*)hmac_out, NULL); + tor_assert(hmac_out); + rv = HMAC(EVP_sha256(), key, (int)key_len, (unsigned char*)msg, (int)msg_len, + (unsigned char*)hmac_out, NULL); + tor_assert(rv); } /* DH */ |