org.springframework.security.crypto.encrypt.BouncyCastleAesBytesEncryptorTest.java Source code

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Here is the source code for org.springframework.security.crypto.encrypt.BouncyCastleAesBytesEncryptorTest.java

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/*
 * Copyright 2011-2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.security.crypto.encrypt;

import java.security.SecureRandom;
import java.util.UUID;

import org.bouncycastle.util.Arrays;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.springframework.security.crypto.codec.Hex;
import org.springframework.security.crypto.keygen.KeyGenerators;

public class BouncyCastleAesBytesEncryptorTest {

    private byte[] testData;
    private String password;
    private String salt;

    @Before
    public void setup() {
        // generate random password, salt, and test data
        SecureRandom secureRandom = new SecureRandom();
        password = UUID.randomUUID().toString();
        byte[] saltBytes = new byte[16];
        secureRandom.nextBytes(saltBytes);
        salt = new String(Hex.encode(saltBytes));
        testData = new byte[1024 * 1024];
        secureRandom.nextBytes(testData);
    }

    @Test
    public void bcCbcWithSecureIvGeneratesDifferentMessages() throws Exception {
        BytesEncryptor bcEncryptor = new BouncyCastleAesCbcBytesEncryptor(password, salt);
        generatesDifferentCipherTexts(bcEncryptor);
    }

    @Test
    public void bcGcmWithSecureIvGeneratesDifferentMessages() throws Exception {
        BytesEncryptor bcEncryptor = new BouncyCastleAesGcmBytesEncryptor(password, salt);
        generatesDifferentCipherTexts(bcEncryptor);
    }

    private void generatesDifferentCipherTexts(BytesEncryptor bcEncryptor) {
        byte[] encrypted1 = bcEncryptor.encrypt(testData);
        byte[] encrypted2 = bcEncryptor.encrypt(testData);
        Assert.assertFalse(Arrays.areEqual(encrypted1, encrypted2));
        byte[] decrypted1 = bcEncryptor.decrypt(encrypted1);
        byte[] decrypted2 = bcEncryptor.decrypt(encrypted2);
        Assert.assertArrayEquals(testData, decrypted1);
        Assert.assertArrayEquals(testData, decrypted2);
    }

    @Test(expected = IllegalArgumentException.class)
    public void bcCbcWithWrongLengthIv() throws Exception {
        new BouncyCastleAesCbcBytesEncryptor(password, salt, KeyGenerators.secureRandom(8));
    }

    @Test(expected = IllegalArgumentException.class)
    public void bcGcmWithWrongLengthIv() throws Exception {
        new BouncyCastleAesGcmBytesEncryptor(password, salt, KeyGenerators.secureRandom(8));
    }
}