ZXCpDfew

1package ssii;
2
3import java.security.InvalidKeyException;
4import java.security.NoSuchAlgorithmException;
5import java.util.Base64;
6
7import javax.crypto.KeyGenerator;
8import javax.crypto.Mac;
9import javax.crypto.SecretKey;
10
11public class Test {
12
13	public static void main(final String[] args) throws InvalidKeyException {
14		// TODO Auto-generated method stub
15
16		String aux = "18dd06c4ecb143659564c947e83a9f009254d533";
17		String message = "34567891 987654 300";
18		String base64_mac = aux.toUpperCase();
19		int i = 0;
20		int counter = 0;
21		while (i == 0) {
22
23			try {
24				Mac mac1 = Mac.getInstance("HmacSHA1");
25
26				KeyGenerator kg = KeyGenerator.getInstance("HmacSHA1");
27				kg.init(32);
28				SecretKey clave = kg.generateKey();
29
30				mac1.init(clave);
31
32				mac1.update(message.getBytes());
33
34				byte[] b = mac1.doFinal();
35
36				String s = javax.xml.bind.DatatypeConverter.printHexBinary(b);
37				s.toUpperCase();
38				if (base64_mac.getBytes().equals(b)) {
39					System.out.println("true");
40				}
41				if (base64_mac.equals(s)) {
42					i = 1;
43					System.out.println("CLAVE ENCONTRADA: " + Base64.getEncoder().encodeToString(clave.getEncoded()));
44
45					break;
46				} else {
47					counter++;
48					if (counter % 1000000 == 0) {
49						System.out.println("Iteración: " + counter);
50						System.out.println("MAC ENCONTRADO   : " + javax.xml.bind.DatatypeConverter.printHexBinary(b));
51						System.out.println("BUSCAMOS: " + base64_mac);
52						System.out.println("CLAVE PROBADA: " + Base64.getEncoder().encodeToString(clave.getEncoded()));
53
54
55					}
56				}
57
58			} catch (NoSuchAlgorithmException e) {
59				// TODO Auto-generated catch block
60				e.printStackTrace();
61			}
62		}
63
64	}
65
66}