cherry.foundation.crypto.SecureStringEncoderTest.java Source code

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Here is the source code for cherry.foundation.crypto.SecureStringEncoderTest.java

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/*
 * Copyright 2014,2015 agwlvssainokuni
 *
 * 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 cherry.foundation.crypto;

import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.not;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.nio.charset.StandardCharsets;

import org.apache.commons.codec.DecoderException;
import org.apache.commons.lang3.RandomStringUtils;
import org.apache.commons.lang3.RandomUtils;
import org.junit.Test;
import org.springframework.security.util.InMemoryResource;

import cherry.foundation.type.SecureString;

public class SecureStringEncoderTest {

    @Test
    public void testEncodeDecode() throws Exception {
        SecureStringEncoder encoder = createSecureStringEncoder();
        for (int i = 0; i < 100; i++) {
            String plain = RandomStringUtils.randomAlphanumeric(1024);
            String crypto = encoder.encode(plain);
            assertThat(crypto, is(not(plain)));
            assertThat(encoder.decode(crypto), is(plain));
        }
    }

    @Test
    public void testSecureString() throws Exception {
        SecureString.setEncoder(createSecureStringEncoder());
        for (int i = 0; i < 100; i++) {

            String plain = RandomStringUtils.randomAlphanumeric(1024);
            SecureString ss0 = SecureString.plainValueOf(plain);
            assertThat(ss0.plain(), is(plain));
            assertThat(ss0.crypto(), is(not(plain)));

            SecureString ss1 = SecureString.cryptoValueOf(ss0.crypto());
            assertThat(ss1.plain(), is(plain));
            assertThat(ss1.crypto(), is(ss0.crypto()));

            SecureString ss2 = SecureString.plainValueOf(ss1.plain());
            assertThat(ss2.plain(), is(plain));
            assertThat(ss2.crypto(), is(ss0.crypto()));

            SecureString ss3 = SecureString.cryptoValueOf(ss2.crypto());
            assertThat(ss3.plain(), is(plain));
            assertThat(ss3.crypto(), is(ss0.crypto()));
        }
    }

    @Test
    public void testDecoderException() throws Exception {
        SecureStringEncoder encoder = createSecureStringEncoder();
        try {
            encoder.decode("XXXX");
            fail("Exception must be thrown");
        } catch (IllegalArgumentException ex) {
            assertTrue(ex.getCause() instanceof DecoderException);
        }
    }

    private SecureStringEncoder createSecureStringEncoder() throws Exception {
        AESDeterministicCryptoSupport crypto = new AESDeterministicCryptoSupport();
        crypto.setSecretKeyResource(new InMemoryResource(RandomUtils.nextBytes(16)));
        crypto.setInitVectorResource(new InMemoryResource(RandomUtils.nextBytes(16)));
        crypto.afterPropertiesSet();
        SecureStringEncoder encoder = new SecureStringEncoder();
        encoder.setCharset(StandardCharsets.UTF_8);
        encoder.setCrypto(crypto);
        return encoder;
    }

}