#ifndef CRYPTO_H
#define CRYPTO_H
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <ntp_fp.h>
#include <ntp.h>
#include <ntp_md5.h>
#include <ntp_stdlib.h>
#include "utilities.h"
#include "sntp-opts.h"
#define LEN_PKT_MAC LEN_PKT_NOMAC + sizeof(u_int32)
struct key {
int key_id;
int key_len;
char type;
char key_seq[16];
struct key *next;
};
int auth_md5(char *pkt_data, int mac_size, struct key *cmp_key);
int auth_init(const char *keyfile, struct key **keys);
void get_key(int key_id, struct key **d_key);
#endif