Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.security.InvalidKeyException;
import java.security.Key;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;

public class Main {
    static String algorithm = "DESede";
    static Key key = KeyGenerator.getInstance(algorithm).generateKey();
    static Cipher cipher = Cipher.getInstance(algorithm);

    public static void main(String[] args) throws Exception {
        byte[] encryptionBytes = encrypt("input");
        System.out.println("Recovered: " + decrypt(encryptionBytes));
    }

    private static byte[] encrypt(String input)
            throws InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
        cipher.init(Cipher.ENCRYPT_MODE, key);
        byte[] inputBytes = input.getBytes();
        return cipher.doFinal(inputBytes);
    }

    private static String decrypt(byte[] encryptionBytes)
            throws InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
        cipher.init(Cipher.DECRYPT_MODE, key);
        byte[] recoveredBytes = cipher.doFinal(encryptionBytes);
        String recovered = new String(recoveredBytes);
        return recovered;
    }
}