kpt829np

1private SecretKey getKey() {
2    byte[] desKeyData = new byte[8];
3    for (int i = 0; i < 7; ++i) {
4        int j = i * 3;
5        desKeyData[i] = (byte)(key.charAt(j) ^ key.charAt(j + 2));
6    }
7    return new SecretKeySpec(desKeyData, "DES");
8}
9
10public byte[] encrypt(String password) {
11    if (password == null) {
12        return null;
13    }
14    byte[] encryptedBytes = password.getBytes();
15    if (!doEncryption) {
16        return encryptedBytes;
17    }
18    SecretKey key = this.getKey();
19    try {
20        Cipher cipher = Cipher.getInstance("DES");
21        cipher.init(1, key);
22        byte[] bytes = null;
23        try {
24            bytes = password.getBytes("UTF-8");
25        }
26        catch (UnsupportedEncodingException ex) {
27            // empty catch block
28        }
29        encryptedBytes = cipher.doFinal(bytes);
30        this.encrypted = true;
31    }
32	
33public String decrypt(byte[] encryptedBytes) {
34    if (encryptedBytes == null) {
35        return null;
36    }
37    String password = null;
38    try {
39        password = new String(encryptedBytes, "UTF-8");
40    }
41    catch (UnsupportedEncodingException ex) {
42        // empty catch block
43    }
44    if (!doEncryption || !this.encrypted) {
45        return password;
46    }
47    SecretKey key = this.getKey();
48    try {
49        Cipher cipher = Cipher.getInstance("DES");
50        cipher.init(2, key);
51        password = new String(cipher.doFinal(encryptedBytes));
52    }
53    catch (NoSuchAlgorithmException e) {
54        logger.error((Object)e);
55    }
56    catch (InvalidKeyException e) {
57        logger.error((Object)e);
58    }
59    catch (NoSuchPaddingException e) {
60        logger.error((Object)e);
61    }
62    catch (IllegalBlockSizeException e) {
63        logger.error((Object)e);
64    }
65    catch (BadPaddingException e) {
66        logger.error((Object)e);
67    }
68    return password;
69}