sXHtjL3d

1/*
2 * To change this license header, choose License Headers in Project Properties.
3 * To change this template file, choose Tools | Templates
4 * and open the template in the editor.
5 */
6package OreoRE;
7import java.util.Base64;
8import java.security.NoSuchAlgorithmException;
9import java.security.spec.InvalidKeySpecException;
10import javax.crypto.Cipher;
11import javax.crypto.CipherInputStream;
12import javax.crypto.CipherOutputStream;
13import javax.crypto.SecretKey;
14import javax.crypto.SecretKeyFactory;
15import javax.crypto.spec.PBEKeySpec;
16
17/**
18 *
19 * @author kaporos
20 */
21public class Main {
22    private final String CYPHER_TRANSFORMATION = "AES";
23    private final byte[] MASTER_SALT = STATIC_INIT_STRING.getBytes();
24    private byte[] PASSWORD_SALT = STATIC_INIT_STRING.getBytes();
25    private String PASSWORD_SALT_STRING = STATIC_INIT_STRING;
26    private static String STATIC_INIT_STRING;
27    private static SecretKey sMasterKey;
28    /**
29     * @param args the command line arguments
30     */
31    public String decryptString(String str) throws Exception {
32     	sMasterKey = getMasterKey("pass word 11", "fCTE0uDA2lc9xpJvcNkhdjd/b0VlaSY/IwLP1tojugpuSDxgtcyG+44aAPQXrA82");
33        return decrypt(sMasterKey, "pass word 11");
34    }
35
36    private String decrypt(SecretKey secretKey, String str) throws Exception {
37        if (secretKey == null) {
38            throw new Exception("SecretKey missing, cannot decrypt.");
39        } else if (str == null) {
40            return null;
41        } else {
42            Cipher instance = Cipher.getInstance(CYPHER_TRANSFORMATION);
43            instance.init(2, secretKey);
44            return new String(instance.doFinal(Base64.getDecoder().decode(str)));
45        }
46    }
47    private SecretKey getPasswordKey(String str) throws Exception {
48        byte[] decoded = Base64.getDecoder().decode(PASSWORD_SALT_STRING);
49        char[] strChar = str.toCharArray();
50        return generateKey(strChar,decoded);
51    }
52    private SecretKey getMasterKey(String str, String str2) throws Exception {
53        return generateKey(decrypt(getPasswordKey(str), str2).toCharArray(), MASTER_SALT);
54    }
55
56    private static SecretKey generateKey(char[] cArr, byte[] bArr) throws NoSuchAlgorithmException, InvalidKeySpecException {
57        return SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1").generateSecret(new PBEKeySpec(cArr, bArr, 1000, 256));
58    }
59    public static void main(String[] args) {
60         StringBuilder sb = new StringBuilder(40);
61        for (int i = 0; i < 20; i++) {
62            sb.append(Integer.toHexString(i));
63        }
64        STATIC_INIT_STRING = sb.toString();
65        
66        // TODO code application logic here
67    }
68    
69}