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// Copyright 2020 Google LLC
//
// 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.internal;
import static com.google.common.truth.Truth.assertThat;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.junit.Assert.assertThrows;
import com.google.crypto.tink.KeyTemplate;
import com.google.crypto.tink.aead.AeadConfig;
import com.google.crypto.tink.aead.AesGcmKeyManager;
import com.google.crypto.tink.proto.OutputPrefixType;
import com.google.protobuf.ExtensionRegistryLite;
import java.security.GeneralSecurityException;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests KeyTemplateProtoConverter. */
@RunWith(JUnit4.class)
public final class KeyTemplateProtoConverterTest {
@BeforeClass
public static void register() throws Exception {
AeadConfig.register();
}
@Test
public void toByteArrayFromByteArray_sameValues() throws Exception {
KeyTemplate template = AesGcmKeyManager.aes128GcmTemplate();
byte[] bytes = KeyTemplateProtoConverter.toByteArray(template);
KeyTemplate template2 = KeyTemplateProtoConverter.fromByteArray(bytes);
assertThat(template.toParameters()).isEqualTo(template2.toParameters());
}
@Test
public void unknownOutputPrefix_throwsGeneralSecurityException() throws Exception {
byte[] templateBytes = KeyTemplateProtoConverter.toByteArray(
AesGcmKeyManager.aes128GcmTemplate());
com.google.crypto.tink.proto.KeyTemplate templateProto =
com.google.crypto.tink.proto.KeyTemplate.parseFrom(
templateBytes, ExtensionRegistryLite.getEmptyRegistry());
byte[] invalidTemplateBytes = templateProto.toBuilder()
.setOutputPrefixType(OutputPrefixType.UNKNOWN_PREFIX).build().toByteArray();
assertThrows(
GeneralSecurityException.class,
() -> {
KeyTemplateProtoConverter.fromByteArray(invalidTemplateBytes);
});
}
@Test
public void fromBadByteArray_throwsException() throws Exception {
assertThrows(
GeneralSecurityException.class,
() -> {
KeyTemplateProtoConverter.fromByteArray("bad template".getBytes(UTF_8));
});
}
}
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