FilesExpand file tree

 master

/

AES.java

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

29 lines (26 loc) · 1.11 KB

 master

/

AES.java

Top

File metadata and controls

• Code
• Blame

29 lines (26 loc) · 1.11 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

import java.security.*;

import javax.crypto.*;

import javax.crypto.spec.*;

import java.io.*;

import java.util.Base64;

public class AES {

public static void main(String[] args) throws Exception {

String message = "AES still rocks!!";

// Get the KeyGenerator

KeyGenerator kgen = KeyGenerator.getInstance("AES");

kgen.init(128); // 192 and 256 bits may not be available

// Generate the secret key specs.

SecretKey skey = kgen.generateKey();

byte[] raw = skey.getEncoded();

SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");

// Instantiate the cipher

Cipher cipher = Cipher.getInstance("AES");

cipher.init(Cipher.ENCRYPT_MODE, skeySpec);

byte[] encrypted = cipher.doFinal((args.length == 0 ? message : args[0]).getBytes());

System.out.println("encrypted string: " + Base64.getEncoder().encodeToString(encrypted));

cipher.init(Cipher.DECRYPT_MODE, skeySpec);

byte[] original = cipher.doFinal(encrypted);

String originalString = new String(original);

System.out.println("Original string: " + originalString);

}

}