n5m1X8Dv

1import javax.crypto.Cipher;
2import java.security.spec.KeySpec;
3import javax.crypto.spec.PBEKeySpec;
4import javax.crypto.SecretKey;
5import javax.crypto.spec.SecretKeySpec;
6import javax.crypto.SecretKeyFactory;
7import java.security.AlgorithmParameters;
8import javax.crypto.spec.IvParameterSpec;
9import java.util.Base64;
10
11public class Decrypter {
12    Cipher dcipher;
13
14    byte[] salt = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
15    int iterationCount = 1024;
16    int keyStrength = 128;
17    SecretKey key;
18    byte[] iv = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
19
20    Decrypter(String passPhrase) throws Exception {
21        SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
22        KeySpec spec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterationCount, keyStrength);
23        SecretKey tmp = factory.generateSecret(spec);
24        key = new SecretKeySpec(tmp.getEncoded(), "AES");
25        dcipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
26    }
27
28    public String decrypt(String base64EncryptedData) throws Exception {
29        dcipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(iv));
30        byte[] decryptedData = new sun.misc.BASE64Decoder().decodeBuffer(base64EncryptedData);
31        byte[] utf8 = dcipher.doFinal(decryptedData);
32        return new String(utf8, "UTF8");
33    }
34
35    public static String decryptWithNum(int num, String tocken) throws Exception {
36        Decrypter decrypter = new Decrypter(Integer.toString(num));
37        String decrypted;
38        try {
39            decrypted = decrypter.decrypt(tocken);
40            return decrypted;
41        } catch(javax.crypto.BadPaddingException _) {
42            return "";
43        }
44    }
45
46    public static String encode(String raw) {
47        return Base64.getEncoder().encodeToString(Base64.getUrlDecoder().decode(raw.getBytes()));
48    }
49
50    public static void main(String args[]) throws Exception {
51        String encrypted = Decrypter.encode("cWKz2Ajf8LPntPBqGdwIZT-3TxXKw40wCahYJRPGKzWzz2mHacBCTnoy43LOc1bZ0OoaVK734Azc_LsQd--Hl_VI_tCjF4-67-7-frheoK5m5ViaShI9n--nfAex2Jin");
52        for (int i = 0; i < 100000; i++) {
53            String res = Decrypter.decryptWithNum(i, encrypted);
54            for (int j = 0; j < res.length(); ++j) {
55                if ((int)res.charAt(j) > 128) {
56                    res = "";
57                    break;
58                }
59            }
60            if (res != "") {
61                System.out.println(res);
62            }
63        }
64    }
65}
66