6GgiRqAf

1package test;
2
3import javax.crypto.Cipher;
4import javax.crypto.SecretKey;
5import javax.crypto.spec.IvParameterSpec;
6import javax.crypto.spec.SecretKeySpec;
7import java.lang.reflect.Array;
8import java.security.MessageDigest;
9import java.util.Base64;
10import java.security.MessageDigest;
11import java.util.Arrays;
12
13import javax.crypto.Cipher;
14import javax.crypto.SecretKey;
15import javax.crypto.spec.IvParameterSpec;
16import javax.crypto.spec.SecretKeySpec;
17import java.util.Base64;
18
19public class TestEncrypt {
20
21    public static void main(String[] args) throws Exception {
22        System.out.println("Cipher test");
23        String text = "{\"function\":\"GetBalance\"}";
24
25        String codedtext = null;
26        String decodedtext = null;
27        try {
28            codedtext = encrypt(text, "t6twy5-S11_75=5qy42ER6Y84r84494p");
29            decodedtext = decrypt(codedtext, "t6twy5-S11_75=5qy42ER6Y84r84494p");
30        } catch (Exception e) {
31            e.printStackTrace();
32        }
33
34        System.out.println(codedtext); // this is a byte array, you'll just see a reference to an array
35        System.out.println(decodedtext); // This correctly shows "kyle boon"
36
37        String response = "dQxMxR89iSTbEMUIYrpsn7xLfw/dgvsrcYhNEAoIE87Xch80CsC971gwhK2CiAyyYBKhLqzaMxoEd2wAGXATkwmBQpGVt+RVXPV2k95smqNoeVzV0RIoimKT9n3mJThOvOzvnV10cwetxWUuKRhL9BgzKlmIIMWGUz1nujd5FXI=";
38        System.out.println(decrypt(response, "t6twy5-S11_75=5qy42ER6Y84r84494p"));
39    }
40
41    public static String encrypt(String message, String key) throws Exception {
42        final MessageDigest md = MessageDigest.getInstance("md5");
43        final byte[] digestOfPassword = md.digest(key.getBytes("utf-8"));
44        final byte[] keyBytes = new byte[digestOfPassword.length + 8];
45        for (int i = 0; i< keyBytes.length; i++) {
46            int j = (i >= digestOfPassword.length ? i - digestOfPassword.length : i);
47            keyBytes[i] = digestOfPassword[j];
48        }
49
50        final SecretKey skey = new SecretKeySpec(keyBytes, "DESede");
51        final IvParameterSpec iv = new IvParameterSpec(new byte[8]);
52        final Cipher cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
53        cipher.init(Cipher.ENCRYPT_MODE, skey);
54
55        final byte[] plainTextBytes = message.getBytes("utf-8");
56        final byte[] cipherText = cipher.doFinal(plainTextBytes);
57        final String encodedCipherText = Base64.getEncoder().encodeToString(cipherText);
58
59        return encodedCipherText;
60    }
61
62
63    public static String decrypt(String base64Msg, String key) throws Exception {
64        final MessageDigest md = MessageDigest.getInstance("md5");
65        final byte[] digestOfPassword = md.digest(key.getBytes("utf-8"));
66        final byte[] keyBytes = new byte[digestOfPassword.length + 8];
67        for (int i = 0; i < keyBytes.length; i++) {
68            int j = (i >= digestOfPassword.length ? i - digestOfPassword.length : i);
69            keyBytes[i] = digestOfPassword[j];
70        }
71
72        final SecretKey skey = new SecretKeySpec(keyBytes, "DESede");
73        final IvParameterSpec iv = new IvParameterSpec(new byte[8]);
74        final Cipher decipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
75        decipher.init(Cipher.DECRYPT_MODE, skey);
76
77        // final byte[] encData = new
78        // sun.misc.BASE64Decoder().decodeBuffer(message);
79        final byte[] plainText = decipher.doFinal(Base64.getDecoder().decode(base64Msg));
80
81        return new String(plainText, "UTF-8");
82    }
83}