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Ensure HMAC_size() handles errors correctly
[openssl.git]
/
crypto
/
hmac
/
hmac.c
diff --git
a/crypto/hmac/hmac.c
b/crypto/hmac/hmac.c
index 3374105cbb941209f89e01cc5ef028e57ab7526d..a2c9dd9845c1e8900caff5d69740a3cd60514ffd 100644
(file)
--- a/
crypto/hmac/hmac.c
+++ b/
crypto/hmac/hmac.c
@@
-118,7
+118,10
@@
int HMAC_Final(HMAC_CTX *ctx, unsigned char *md, unsigned int *len)
size_t HMAC_size(const HMAC_CTX *ctx)
{
- return EVP_MD_size((ctx)->md);
+ int size = EVP_MD_size((ctx)->md);
+ if (size < 0)
+ return 0;
+ return size;
}
HMAC_CTX *HMAC_CTX_new(void)