#include "os.h"#include <mp.h>#include <libsec.h> uchar key[] = "Jefe";uchar data[] = "what do ya want for nothing?"; voidmain(void){	int i;	uchar hash[MD5dlen]; 	hmac_md5(data, strlen((char*)data), key, 4, hash, nil);	for(i=0; i<MD5dlen; i++)		print("%2.2x", hash[i]);	print("\n");	print("750c783e6ab0b503eaa86e310a5db738\n");}