OpenSSL: Add TEST_FAIL() checks to allow error path testing

This makes it easier to test various error paths related to key
derivation and authentication steps.

Signed-off-by: Jouni Malinen <j@w1.fi>

src/crypto/crypto_openssl.c

@@ -69,6 +69,9 @@ static int openssl_digest_vector(const EVP_MD *type, size_t num_elem,
 	size_t i;
 	unsigned int mac_len;
 
+	if (TEST_FAIL())
+		return -1;
+
 	EVP_MD_CTX_init(&ctx);
 	if (!EVP_DigestInit_ex(&ctx, type, NULL)) {
 		wpa_printf(MSG_ERROR, "OpenSSL: EVP_DigestInit_ex failed: %s",
@@ -771,6 +774,9 @@ static int openssl_hmac_vector(const EVP_MD *type, const u8 *key,
 	size_t i;
 	int res;
 
+	if (TEST_FAIL())
+		return -1;
+
 	HMAC_CTX_init(&ctx);
 #if OPENSSL_VERSION_NUMBER < 0x00909000
 	HMAC_Init_ex(&ctx, key, key_len, type, NULL);