com.antisleuthsecurity.asc_api.cryptography.ciphers.symmetric.DESCipherTest.java Source code

Introduction

Here is the source code for com.antisleuthsecurity.asc_api.cryptography.ciphers.symmetric.DESCipherTest.java

Source

/**
 * @author Bob Schmidinger, Robert.Schmidinger@gmail.com
 * License: Apache 2.0
 * Copywrite  2015
 */
package com.antisleuthsecurity.asc_api.cryptography.ciphers.symmetric;

import static org.junit.Assert.assertNotNull;

import java.security.NoSuchAlgorithmException;

import javax.crypto.Cipher;

import static org.junit.Assert.*;

import org.bouncycastle.util.encoders.Base64;
import org.junit.Test;

import com.antisleuthsecurity.asc_api.exceptions.AscException;

public class DESCipherTest {

    DESCipher des = new DESCipher();

    @Test
    public void testGenerateIV() {
        byte[] iv = this.des.generateIV();
        assertNotNull(iv);
        System.out.println("DES IV: " + new String(iv));
    }

    @Test
    public void testGenerateKey() throws NoSuchAlgorithmException {
        byte[] key = this.des.generateKey();
        assertNotNull(key);
        System.out.println("DES Key: " + new String(key));
    }

    @Test
    public void testGetCipher() throws Exception {
        try {
            this.des.generateKey();
            this.des.generateIV();
            this.des.setMode(Cipher.ENCRYPT_MODE);
            Cipher cipher = this.des.getCipher();
            assertNotNull(cipher);
        } catch (Exception e) {
            e.printStackTrace();
            throw e;
        }
    }

    @Test
    public void testEncryption() throws Exception {
        try {
            this.des.generateKey();
            this.des.generateIV();
            this.des.setMode(Cipher.ENCRYPT_MODE);
            Cipher cipher = this.des.getCipher();
            assertNotNull(cipher);

            byte[] testString = "This is a test to encrypt".getBytes();
            byte[] encrypted = cipher.doFinal(testString);

            System.out.println("Original: " + new String(Base64.encode(testString)));
            System.out.println("Encrypted: " + new String(Base64.encode(encrypted)));
            assertNotEquals(new String(testString), new String(encrypted));

            cipher = this.des.getCipher(Cipher.DECRYPT_MODE);
            byte[] decrypted = cipher.doFinal(encrypted);
            System.out.println("Decrypted: " + new String(Base64.encode(decrypted)));
            assertEquals(new String(testString), new String(decrypted));
        } catch (Exception e) {
            e.printStackTrace();
            throw e;
        }
    }
}