| 21478 |
rajender |
1 |
package com.saholic.profittill.Utils;
|
|
|
2 |
|
|
|
3 |
import android.util.Base64;
|
|
|
4 |
|
|
|
5 |
import java.io.UnsupportedEncodingException;
|
|
|
6 |
import java.security.spec.AlgorithmParameterSpec;
|
|
|
7 |
import java.security.spec.KeySpec;
|
|
|
8 |
|
|
|
9 |
import javax.crypto.Cipher;
|
|
|
10 |
import javax.crypto.IllegalBlockSizeException;
|
|
|
11 |
import javax.crypto.SecretKey;
|
|
|
12 |
import javax.crypto.SecretKeyFactory;
|
|
|
13 |
import javax.crypto.spec.PBEKeySpec;
|
|
|
14 |
import javax.crypto.spec.PBEParameterSpec;
|
|
|
15 |
|
|
|
16 |
public class DESEncrypter {
|
|
|
17 |
|
|
|
18 |
Cipher ecipher;
|
|
|
19 |
Cipher dcipher;
|
|
|
20 |
|
|
|
21 |
byte[] salt = {(byte) 0xA9, (byte) 0x9B, (byte) 0xC8, (byte) 0x32,
|
|
|
22 |
(byte) 0x56, (byte) 0x35, (byte) 0xE3, (byte) 0x03};
|
|
|
23 |
|
|
|
24 |
int iterationCount = 19;
|
|
|
25 |
|
|
|
26 |
public DESEncrypter(String passPhrase) {
|
|
|
27 |
try {
|
|
|
28 |
KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt,
|
|
|
29 |
iterationCount);
|
|
|
30 |
SecretKey key = SecretKeyFactory.getInstance("PBEWithMD5AndDES")
|
|
|
31 |
.generateSecret(keySpec);
|
|
|
32 |
ecipher = Cipher.getInstance(key.getAlgorithm());
|
|
|
33 |
dcipher = Cipher.getInstance(key.getAlgorithm());
|
|
|
34 |
|
|
|
35 |
// Prepare the parameter to the ciphers
|
|
|
36 |
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount);
|
|
|
37 |
|
|
|
38 |
// Create the ciphers
|
|
|
39 |
ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
|
|
|
40 |
dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
|
|
|
41 |
} catch (java.security.InvalidAlgorithmParameterException e) {
|
|
|
42 |
e.printStackTrace();
|
|
|
43 |
} catch (java.security.spec.InvalidKeySpecException e) {
|
|
|
44 |
e.printStackTrace();
|
|
|
45 |
} catch (javax.crypto.NoSuchPaddingException e) {
|
|
|
46 |
e.printStackTrace();
|
|
|
47 |
} catch (java.security.NoSuchAlgorithmException e) {
|
|
|
48 |
e.printStackTrace();
|
|
|
49 |
} catch (java.security.InvalidKeyException e) {
|
|
|
50 |
e.printStackTrace();
|
|
|
51 |
}
|
|
|
52 |
}
|
|
|
53 |
|
|
|
54 |
public String encrypt(String str) {
|
|
|
55 |
try {
|
|
|
56 |
byte[] utf8 = str.getBytes("UTF8");
|
|
|
57 |
byte[] enc = ecipher.doFinal(utf8);
|
|
|
58 |
return Base64.encodeToString(enc, Base64.URL_SAFE);
|
|
|
59 |
} catch (javax.crypto.BadPaddingException e) {
|
|
|
60 |
e.printStackTrace();
|
|
|
61 |
} catch (IllegalBlockSizeException e) {
|
|
|
62 |
e.printStackTrace();
|
|
|
63 |
} catch (UnsupportedEncodingException e) {
|
|
|
64 |
e.printStackTrace();
|
|
|
65 |
}
|
|
|
66 |
return null;
|
|
|
67 |
}
|
|
|
68 |
|
|
|
69 |
public String decrypt(String str) {
|
|
|
70 |
try {
|
|
|
71 |
byte[] dec = Base64.decode(str, android.util.Base64.DEFAULT);
|
|
|
72 |
byte[] utf8 = dcipher.doFinal(dec);
|
|
|
73 |
return new String(utf8, "UTF8");
|
|
|
74 |
} catch (javax.crypto.BadPaddingException e) {
|
|
|
75 |
e.printStackTrace();
|
|
|
76 |
} catch (IllegalBlockSizeException e) {
|
|
|
77 |
e.printStackTrace();
|
|
|
78 |
} catch (UnsupportedEncodingException e) {
|
|
|
79 |
e.printStackTrace();
|
|
|
80 |
}
|
|
|
81 |
return null;
|
|
|
82 |
}
|
|
|
83 |
}
|
|
|
84 |
|