Make sure HMAC_Init is called before HMAC_Update, fixes crash

diff --git a/src/libstrongswan/plugins/openssl/openssl_hmac.c b/src/libstrongswan/plugins/openssl/openssl_hmac.c
index feeecf539d74f0c8197c81de569d490331b06d42..b027e0fc3bbb63fefbe5a411b9927a46c1d1f000 100644 (file)
--- a/src/libstrongswan/plugins/openssl/openssl_hmac.c
+++ b/src/libstrongswan/plugins/openssl/openssl_hmac.c
@@ -159,6 +159,11 @@ static mac_t *hmac_create(hash_algorithm_t algo)
        }
 
        HMAC_CTX_init(&this->hmac);
+       if (!HMAC_Init_ex(&this->hmac, NULL, 0, this->hasher, NULL))
+       {
+               destroy(this);
+               return NULL;
+       }
 
        return &this->public;
 }