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// Copyright 2017 Google Inc.
//
// 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 com.google.crypto.tink.subtle;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import java.security.GeneralSecurityException;
import java.security.KeyPairGenerator;
import java.security.Security;
import javax.crypto.Cipher;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for EngineFactory. */
@RunWith(JUnit4.class)
public class EngineFactoryTest {
@Test
public void testAtLeastGetsACipherByDefault() throws Exception {
EngineFactory.CIPHER.getInstance("AES");
// didn't throw
}
@Test // A bunch of default settings for a regular JVM.
public void testCustomListOfProviders() throws Exception {
if (SubtleUtil.isAndroid()) {
// Android doesn't have SUN, SunJCE, or SunEC provider.
return;
}
Cipher c = EngineFactory.getCustomCipherProvider(true, "X", "Y").getInstance("AES");
KeyPairGenerator kpg =
EngineFactory.getCustomKeyPairGeneratorProvider(true, "X", "Y").getInstance("EC");
assertEquals("SUN", Security.getProviders()[0].getName()); // The first provider
assertEquals("SunJCE", c.getProvider().getName()); // The first one to implement AES
assertEquals("SunEC", kpg.getProvider().getName()); // The first one to implement EC stuff
kpg = EngineFactory.getCustomKeyPairGeneratorProvider(false, "SunEC").getInstance("EC");
c = EngineFactory.getCustomCipherProvider(false, "SunJCE").getInstance("AES");
try {
EngineFactory.getCustomCipherProvider(false, "SunEC").getInstance("AES");
fail();
} catch (GeneralSecurityException e) {
// expected
}
try {
EngineFactory.getCustomKeyPairGeneratorProvider(false, "SunJCE").getInstance("AES");
fail();
} catch (GeneralSecurityException e) {
// expected
}
}
@Test
public void testNoProviders() throws Exception {
try {
EngineFactory.getCustomCipherProvider(false).getInstance("AES");
fail();
} catch (GeneralSecurityException e) {
// expected
}
try {
EngineFactory.getCustomCipherProvider(true).getInstance("I don't exist, no point trying");
fail();
} catch (GeneralSecurityException e) {
// expected
}
try {
EngineFactory.getCustomKeyPairGeneratorProvider(false, "SunJCE").getInstance("EC");
fail();
} catch (GeneralSecurityException e) {
// expected
}
}
@Test
public void testIsReuseable() throws Exception {
EngineFactory.CIPHER.getInstance("AES");
EngineFactory.CIPHER.getInstance("AES");
EngineFactory.CIPHER.getInstance("AES");
// didn't throw
}
}