Yv6w3ZgJ

1java.security.InvalidKeyException: Illegal key size or default parameters
2	
3public class Encryption {
4
5    public static class MessageEncrypt {
6
7        public static class AES {
8            private final static String ALGO = "AES";
9            private String secretKey;
10            private String data;
11
12            public String encrypt(String secretKey, String data) throws Exception {
13                SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
14                KeySpec spec = new PBEKeySpec(secretKey.toCharArray(), secretKey.getBytes(), 128, 256);
15                SecretKey tmp = factory.generateSecret(spec);
16                SecretKey key = new SecretKeySpec(tmp.getEncoded(), ALGO);
17                Cipher cipher = Cipher.getInstance(ALGO);
18                cipher.init(Cipher.ENCRYPT_MODE, key);
19                return toHex(cipher.doFinal(data.getBytes()));
20            }
21
22            public String decrypt(String secretKey, String data) throws Exception {
23                SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
24                KeySpec spec = new PBEKeySpec(secretKey.toCharArray(), secretKey.getBytes(), 128, 256);
25                SecretKey tmp = factory.generateSecret(spec);
26                SecretKey key = new SecretKeySpec(tmp.getEncoded(), ALGO);
27                Cipher cipher = Cipher.getInstance(ALGO);
28                cipher.init(Cipher.DECRYPT_MODE, key);
29                return new String(cipher.doFinal(toByte(data)));
30            }
31
32            private static byte[] toByte(String hexString) {
33                int len = hexString.length() / 2;
34                byte[] result = new byte[len];
35                for (int i = 0; i < len; i++)
36                    result[i] = Integer.valueOf(hexString.substring(2 * i, 2 * i + 2), 16).byteValue();
37                return result;
38            }
39
40            public static String toHex(byte[] stringBytes) {
41                StringBuffer result = new StringBuffer(2 * stringBytes.length);
42                for (int i = 0; i < stringBytes.length; i++) {
43                    result.append(HEX.charAt((stringBytes[i] >> 4) & 0x0f)).append(HEX.charAt(stringBytes[i] & 0x0f));
44                }
45                return result.toString();
46            }
47
48            private final static String HEX = "0123456789ABCDEF";
49        }
50    }
51
52    static class DataEncrypt {
53
54    }
55
56}
57	
58public class Testing {
59
60    public static void main(String[] args) throws Exception {
61
62        AES cryptoAES = new AES();
63        System.out.println(cryptoAES.encrypt("43234sfeff", "re"));
64
65    }
66
67}
68	
69Exception in thread "main" java.security.InvalidKeyException: Illegal key size or default parameters
70    at javax.crypto.Cipher.checkCryptoPerm(Cipher.java:1021)
71    at javax.crypto.Cipher.implInit(Cipher.java:796)
72    at javax.crypto.Cipher.chooseProvider(Cipher.java:859)
73    at javax.crypto.Cipher.init(Cipher.java:1229)
74    at javax.crypto.Cipher.init(Cipher.java:1166)
75    at com.detroit.Encryption$MessageEncrypt$AES.encrypt(Encryption.java:35)
76    at testing.Testing.main(Testing.java:10)