de.alpharogroup.crypto.key.KeyEncryptDecryptorTest.java Source code

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Here is the source code for de.alpharogroup.crypto.key.KeyEncryptDecryptorTest.java

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/**
 * The MIT License
 *
 * Copyright (C) 2015 Asterios Raptis
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package de.alpharogroup.crypto.key;

import java.io.File;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Security;

import javax.crypto.Cipher;

import org.apache.log4j.Logger;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.testng.AssertJUnit;
import org.testng.annotations.Test;

import de.alpharogroup.crypto.algorithm.KeyPairWithModeAndPaddingAlgorithm;
import de.alpharogroup.crypto.key.reader.PrivateKeyReader;
import de.alpharogroup.crypto.key.reader.PublicKeyReader;
import de.alpharogroup.crypto.model.CryptModel;
import de.alpharogroup.crypto.provider.SecurityProvider;
import de.alpharogroup.file.search.PathFinder;

/**
 * Test class for {@link PublicKeyEncryptor} and {@link PrivateKeyDecryptor}.
 */
public class KeyEncryptDecryptorTest {

    /** The Constant logger. */
    private static final Logger logger = Logger.getLogger(KeyEncryptDecryptorTest.class.getName());

    /**
     * Test encrypt and decrypt with {@link PublicKeyEncryptor#encrypt(byte[])} and
     * {@link PrivateKeyDecryptor#decrypt(byte[])} loaded from pem files.
     *
     * @throws Exception
     *             is thrown if any security exception occured.
     */
    @Test
    public void testEncryptDecryptPemFiles() throws Exception {
        final String test = "Lorem ipsum dolor sit amet, consetetur sadipscing elitr,;-)";
        final byte[] testBytes = test.getBytes("UTF-8");

        final File keyPemDir = new File(PathFinder.getSrcTestResourcesDir(), "pem");
        final File publickeyPemFile = new File(keyPemDir, "public.pem");
        final File privatekeyPemFile = new File(keyPemDir, "private.pem");

        Security.addProvider(new BouncyCastleProvider());
        final PrivateKey privateKey = PrivateKeyReader.readPemPrivateKey(privatekeyPemFile, SecurityProvider.BC);

        final PublicKey publicKey = PublicKeyReader.readPemPublicKey(publickeyPemFile, SecurityProvider.BC);

        final CryptModel<Cipher, PublicKey> encryptModel = CryptModel.<Cipher, PublicKey>builder().key(publicKey)
                .algorithm(KeyPairWithModeAndPaddingAlgorithm.RSA_ECB_OAEPWithSHA256AndMGF1Padding).build();

        final CryptModel<Cipher, PrivateKey> decryptModel = CryptModel.<Cipher, PrivateKey>builder().key(privateKey)
                .algorithm(KeyPairWithModeAndPaddingAlgorithm.RSA_ECB_OAEPWithSHA256AndMGF1Padding).build();

        final PublicKeyEncryptor encryptor = new PublicKeyEncryptor(encryptModel);
        final PrivateKeyDecryptor decryptor = new PrivateKeyDecryptor(decryptModel);

        byte[] encrypted = encryptor.encrypt(testBytes);

        byte[] decrypted = decryptor.decrypt(encrypted);

        String decryptedString = new String(decrypted, "UTF-8");
        logger.debug(decryptedString);
        AssertJUnit.assertTrue("String before encryption is not equal after decryption.",
                test.equals(decryptedString));
        for (int i = 0; i < 100; i++) {
            encrypted = encryptor.encrypt(testBytes);
            decrypted = decryptor.decrypt(encrypted);

            decryptedString = new String(decrypted, "UTF-8");
            AssertJUnit.assertTrue("String before encryption is not equal after decryption.",
                    test.equals(decryptedString));
            logger.debug(decryptedString);
        }
    }

    /**
     * Test encrypt and decrypt with {@link PublicKeyEncryptor#encrypt(byte[])} and
     * {@link PrivateKeyDecryptor#decrypt(byte[])} loaded from der files.
     *
     * @throws Exception
     *             is thrown if any security exception occured.
     */
    @Test
    public void testEncryptDecryptDerFiles() throws Exception {
        final String test = "Lorem ipsum dolor sit amet, consetetur sadipscing elitr,;-)";
        final byte[] testBytes = test.getBytes("UTF-8");

        final File publickeyDerDir = new File(PathFinder.getSrcTestResourcesDir(), "der");
        final File publickeyDerFile = new File(publickeyDerDir, "public.der");
        final File privatekeyDerFile = new File(publickeyDerDir, "private.der");

        final PrivateKey privateKey = PrivateKeyReader.readPrivateKey(privatekeyDerFile);

        final PublicKey publicKey = PublicKeyReader.readPublicKey(publickeyDerFile);

        final CryptModel<Cipher, PublicKey> encryptModel = CryptModel.<Cipher, PublicKey>builder().key(publicKey)
                .algorithm(KeyPairWithModeAndPaddingAlgorithm.RSA_ECB_OAEPWithSHA1AndMGF1Padding).build();

        final CryptModel<Cipher, PrivateKey> decryptModel = CryptModel.<Cipher, PrivateKey>builder().key(privateKey)
                .algorithm(KeyPairWithModeAndPaddingAlgorithm.RSA_ECB_OAEPWithSHA1AndMGF1Padding).build();

        final PublicKeyEncryptor encryptor = new PublicKeyEncryptor(encryptModel);
        final PrivateKeyDecryptor decryptor = new PrivateKeyDecryptor(decryptModel);

        final byte[] encrypted = encryptor.encrypt(testBytes);

        final byte[] decrypted = decryptor.decrypt(encrypted);

        final String decryptedString = new String(decrypted, "UTF-8");
        AssertJUnit.assertTrue("String before encryption is not equal after decryption.",
                test.equals(decryptedString));
    }

}