#include "lib7.h"
#include "lib2.h"

int cbc_mac(char *msg, unsigned int msg_len, char *iv, char *key, char *mac)
{
	int padding_len = 0;

	char *msg_padded = __pkcs7_padding(msg, msg_len, 16, &padding_len);
	char *res = malloc(msg_len+padding_len);
	aes_cbc(msg_padded, msg_len+padding_len, res, key, iv, 1);
	char *ciphertext = malloc(msg_len+padding_len);
	memcpy(mac, &res[msg_len+padding_len-16], 16);
}