QLYz5RSm

1package com.company;
2
3import java.io.UnsupportedEncodingException;
4import java.security.MessageDigest;
5import java.security.NoSuchAlgorithmException;
6import java.util.Arrays;
7import java.util.Base64;
8
9import javax.crypto.Cipher;
10import javax.crypto.spec.SecretKeySpec;
11
12public class AES {
13
14    private static SecretKeySpec secretKey;
15    private static byte[] key;
16
17    public static void setKey(String myKey)
18    {
19        MessageDigest sha = null;
20        try {
21            key = myKey.getBytes("UTF-8");
22            sha = MessageDigest.getInstance("SHA-1");
23            key = sha.digest(key);
24            key = Arrays.copyOf(key, 16);
25            secretKey = new SecretKeySpec(key, "AES");
26        }
27        catch (NoSuchAlgorithmException e) {
28            e.printStackTrace();
29        }
30        catch (UnsupportedEncodingException e) {
31            e.printStackTrace();
32        }
33    }
34
35    public static String encrypt(String strToEncrypt, String secret)
36    {
37        try
38        {
39            setKey(secret);
40            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
41            cipher.init(Cipher.ENCRYPT_MODE, secretKey);
42            return Base64.getEncoder().encodeToString(cipher.doFinal(strToEncrypt.getBytes("UTF-8")));
43        }
44        catch (Exception e)
45        {
46            System.out.println("Error while encrypting: " + e.toString());
47        }
48        return null;
49    }
50
51    public static String decrypt(String strToDecrypt, String secret)
52    {
53        try
54        {
55            setKey(secret);
56            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5PADDING");
57            cipher.init(Cipher.DECRYPT_MODE, secretKey);
58            return new String(cipher.doFinal(Base64.getDecoder().decode(strToDecrypt)));
59        }
60        catch (Exception e)
61        {
62            System.out.println("Error while decrypting: " + e.toString());
63        }
64        return null;
65    }
66}