MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.security.Key;
import java.security.KeyPair;
import java.security.KeyPairGenerator;

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

public class MainClass {
    public static void main(String[] args) throws Exception {
        KeyGenerator keyGenerator = KeyGenerator.getInstance("Blowfish");
        keyGenerator.init(128);
        Key blowfishKey = keyGenerator.generateKey();

        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        keyPairGenerator.initialize(1024);
        KeyPair keyPair = keyPairGenerator.genKeyPair();

        Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
        cipher.init(Cipher.ENCRYPT_MODE, keyPair.getPublic());

        byte[] blowfishKeyBytes = blowfishKey.getEncoded();
        System.out.println(new String(blowfishKeyBytes));
        byte[] cipherText = cipher.doFinal(blowfishKeyBytes);
        System.out.println(new String(cipherText));
        cipher.init(Cipher.DECRYPT_MODE, keyPair.getPrivate());

        byte[] decryptedKeyBytes = cipher.doFinal(cipherText);
        System.out.println(new String(decryptedKeyBytes));
        SecretKey newBlowfishKey = new SecretKeySpec(decryptedKeyBytes, "Blowfish");
    }
}