ptZ9wuAR

1#########----FILE1----Main
2package com.aveksa.javabased;  
3
4public class CredsMain {
5
6	public static void main(String[] args)
7	{
8	    final String secretKey = "dajhdhasjhdjhdsj787678ada";
9	     
10	    String originalString = args[0];
11	    String encryptedString = CredsEncrypt.encrypt(originalString, secretKey) ;
12	    String decryptedString = CredsEncrypt.decrypt(encryptedString, secretKey) ;
13	     
14	    System.out.println("Entered Password : " + originalString);
15	    System.out.println("Encrypted Value: "+encryptedString);
16	    System.out.println("Decrypted Value: "+decryptedString);
17	}
18}  
19
20
21####----FILE2----encrypt
22import java.io.UnsupportedEncodingException;
23import java.security.MessageDigest;
24import java.security.NoSuchAlgorithmException;
25import java.util.Arrays;
26import java.util.Base64;
27 
28import javax.crypto.Cipher;
29import javax.crypto.spec.SecretKeySpec;
30 
31public class CredsEncrypt {
32 
33    private static SecretKeySpec secretKey;
34    private static byte[] key;
35 
36    public static void setKey(String myKey)
37    {
38        MessageDigest sha = null;
39        try {
40            key = myKey.getBytes("UTF-8");
41            sha = MessageDigest.getInstance("SHA-1");
42            key = sha.digest(key);
43            key = Arrays.copyOf(key, 16);
44            secretKey = new SecretKeySpec(key, "AES");
45        }
46        catch (NoSuchAlgorithmException e) {
47            e.printStackTrace();
48        }
49        catch (UnsupportedEncodingException e) {
50            e.printStackTrace();
51        }
52    }
53 
54    public static String encrypt(String strToEncrypt, String secret)
55    {
56        try
57        {
58            setKey(secret);
59            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
60            cipher.init(Cipher.ENCRYPT_MODE, secretKey);
61            return Base64.getEncoder().encodeToString(cipher.doFinal(strToEncrypt.getBytes("UTF-8")));
62        }
63        catch (Exception e)
64        {
65            System.out.println("Error while encrypting: " + e.toString());
66        }
67        return null;
68    }
69 
70    public static String decrypt(String strToDecrypt, String secret)
71    {
72        try
73        {
74            setKey(secret);
75            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5PADDING");
76            cipher.init(Cipher.DECRYPT_MODE, secretKey);
77            return new String(cipher.doFinal(Base64.getDecoder().decode(strToDecrypt)));
78        }
79        catch (Exception e)
80        {
81            System.out.println("Error while decrypting: " + e.toString());
82        }
83        return null;
84    }
85}