KVMu2Z8p

1try{
2    String plainData="my name is laksahan",cipherText,decryptedText;
3    KeyGenerator keyGen = KeyGenerator.getInstance("AES");
4    keyGen.init(128);
5    SecretKey secretKey = keyGen.generateKey();
6    Cipher aesCipher = Cipher.getInstance("AES");
7    aesCipher.init(Cipher.ENCRYPT_MODE,secretKey);
8    byte[] byteDataToEncrypt = plainData.getBytes();
9    byte[] byteCipherText = aesCipher.doFinal(byteDataToEncrypt);
10    cipherText = new BASE64Encoder().encode(byteCipherText);
11System.out.println(cipherText);
12}catch(Exception e){
13
14}
15	
16import javax.crypto.Cipher;
17import javax.crypto.KeyGenerator;
18import javax.crypto.SecretKey;
19import sun.misc.BASE64Encoder;
20import sun.misc.BASE64Decoder;
21
22public class AESExample
23{
24    public static void main(String[] args)
25    {
26        try
27        {
28            String plainData = "my name is laksahan", cipherText, decryptedText;
29            KeyGenerator keyGen = KeyGenerator.getInstance("AES");
30            keyGen.init(128);
31            SecretKey secretKey = keyGen.generateKey();
32            cipherText = encrypt(plainData, secretKey);
33            System.out.println(cipherText);
34            decryptedText = decrypt(cipherText, secretKey);
35            System.out.println(decryptedText);
36        } catch (Exception e)
37        {
38            e.printStackTrace();
39        }
40
41    }
42
43    public static String encrypt(String plainData, SecretKey secretKey) throws Exception
44    {
45        Cipher aesCipher = Cipher.getInstance("AES");
46        aesCipher.init(Cipher.ENCRYPT_MODE, secretKey);
47        byte[] byteDataToEncrypt = plainData.getBytes();
48        byte[] byteCipherText = aesCipher.doFinal(byteDataToEncrypt);
49        return new BASE64Encoder().encode(byteCipherText);
50    }
51
52    public static String decrypt(String cipherData, SecretKey secretKey) throws Exception
53    {
54        byte[] data = new BASE64Decoder().decodeBuffer(cipherData);
55        Cipher aesCipher = Cipher.getInstance("AES");
56        aesCipher.init(Cipher.DECRYPT_MODE, secretKey);
57        byte[] plainData = aesCipher.doFinal(data);
58        return new String(plainData);
59    }
60
61}
62	
63import javax.crypto.Cipher;
64import javax.crypto.spec.SecretKeySpec;
65
66import sun.misc.BASE64Encoder;
67import sun.misc.BASE64Decoder;
68
69public class AESExample
70{
71
72    public static void main(String[] args)
73    {
74        try
75        {
76            byte[]key={-4, -14, 106, -75, -9, 65, -95, 77, -52, 73, -87, -101, 80, 94, -59, -66};
77            String plainData = "my name is laksahan", cipherText, decryptedText;
78            System.out.println(key.length);
79            cipherText = encrypt(plainData, key);
80            System.out.println(cipherText);
81            decryptedText = decrypt(cipherText, key);
82            System.out.println(decryptedText);
83        } catch (Exception e)
84        {
85            e.printStackTrace();
86        }
87    }
88
89    public static String encrypt(String plainData, byte[] key) throws Exception
90    {
91        Cipher aesCipher = Cipher.getInstance("AES");
92        SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
93        aesCipher.init(Cipher.ENCRYPT_MODE, keySpec);
94        byte[] byteDataToEncrypt = plainData.getBytes();
95        byte[] byteCipherText = aesCipher.doFinal(byteDataToEncrypt);
96        return new BASE64Encoder().encode(byteCipherText);
97    }
98
99    public static String decrypt(String cipherData, byte[] key) throws Exception
100    {
101        byte[] data = new BASE64Decoder().decodeBuffer(cipherData);
102        SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
103        Cipher aesCipher = Cipher.getInstance("AES");
104        aesCipher.init(Cipher.DECRYPT_MODE, keySpec);
105        byte[] plainData = aesCipher.doFinal(data);
106        return new String(plainData);
107    }
108
109}
110	
111byte[] data = new BASE64Decoder().decodeBuffer(cipherData);
112        Cipher aesCipher = Cipher.getInstance("AES");
113        aesCipher.init(Cipher.DECRYPT_MODE, secretKeyUsed while encrypting);
114        byte[] plainData = aesCipher.doFinal(data);
115        return new String(plainData);