Add TEST_FAIL() condition to aes_128_cbc_encrypt/decrypt()

This enables more error path testing.

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

src/crypto/aes-cbc.c

@@ -28,6 +28,9 @@ int aes_128_cbc_encrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
 	u8 *pos = data;
 	int i, j, blocks;
 
+	if (TEST_FAIL())
+		return -1;
+
 	ctx = aes_encrypt_init(key, 16);
 	if (ctx == NULL)
 		return -1;
@@ -61,6 +64,9 @@ int aes_128_cbc_decrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
 	u8 *pos = data;
 	int i, j, blocks;
 
+	if (TEST_FAIL())
+		return -1;
+
 	ctx = aes_decrypt_init(key, 16);
 	if (ctx == NULL)
 		return -1;

src/crypto/crypto_openssl.c

@@ -345,6 +345,9 @@ int aes_128_cbc_encrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
 	int clen, len;
 	u8 buf[16];
 
+	if (TEST_FAIL())
+		return -1;
+
 	EVP_CIPHER_CTX_init(&ctx);
 	if (EVP_EncryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL, key, iv) != 1)
 		return -1;
@@ -370,6 +373,9 @@ int aes_128_cbc_decrypt(const u8 *key, const u8 *iv, u8 *data, size_t data_len)
 	int plen, len;
 	u8 buf[16];
 
+	if (TEST_FAIL())
+		return -1;
+
 	EVP_CIPHER_CTX_init(&ctx);
 	if (EVP_DecryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL, key, iv) != 1)
 		return -1;