| // 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.testing; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static org.junit.Assert.assertThrows; |
| |
| import com.google.crypto.tink.KeyTemplate; |
| import com.google.crypto.tink.KeyTypeManager; |
| import com.google.crypto.tink.proto.AesGcmKey; |
| import com.google.crypto.tink.proto.AesGcmKeyFormat; |
| import com.google.crypto.tink.proto.KeyData.KeyMaterialType; |
| import com.google.crypto.tink.subtle.Random; |
| import com.google.protobuf.ByteString; |
| import com.google.protobuf.ExtensionRegistryLite; |
| import com.google.protobuf.InvalidProtocolBufferException; |
| import java.security.GeneralSecurityException; |
| import org.junit.Test; |
| import org.junit.function.ThrowingRunnable; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for KeyTypeManagerTestUtil */ |
| @RunWith(JUnit4.class) |
| public final class KeyTypeManagerTestUtilTest { |
| |
| private static class TestKeyTypeManager extends KeyTypeManager<AesGcmKey> { |
| private final String typeUrl; |
| |
| public TestKeyTypeManager(String typeUrl) { |
| super(AesGcmKey.class); |
| this.typeUrl = typeUrl; |
| } |
| |
| @Override |
| public String getKeyType() { |
| return typeUrl; |
| } |
| |
| @Override |
| public int getVersion() { |
| return 0; |
| } |
| |
| @Override |
| public KeyMaterialType keyMaterialType() { |
| return KeyMaterialType.SYMMETRIC; |
| } |
| |
| @Override |
| public void validateKey(AesGcmKey keyProto) throws GeneralSecurityException { |
| // Throw by hand so we can verify the exception comes from here. |
| if (keyProto.getKeyValue().size() != 16) { |
| throw new GeneralSecurityException("validateKey(AesGcmKey) failed"); |
| } |
| } |
| |
| @Override |
| public AesGcmKey parseKey(ByteString byteString) throws InvalidProtocolBufferException { |
| return AesGcmKey.parseFrom(byteString, ExtensionRegistryLite.getEmptyRegistry()); |
| } |
| |
| @Override |
| public KeyFactory<AesGcmKeyFormat, AesGcmKey> keyFactory() { |
| return new KeyFactory<AesGcmKeyFormat, AesGcmKey>(AesGcmKeyFormat.class) { |
| @Override |
| public void validateKeyFormat(AesGcmKeyFormat format) throws GeneralSecurityException { |
| // Throw by hand so we can verify the exception comes from here. |
| if (format.getKeySize() != 16) { |
| throw new GeneralSecurityException("validateKeyFormat(AesGcmKeyFormat) failed"); |
| } |
| } |
| |
| @Override |
| public AesGcmKeyFormat parseKeyFormat(ByteString byteString) |
| throws InvalidProtocolBufferException { |
| return AesGcmKeyFormat.parseFrom(byteString, ExtensionRegistryLite.getEmptyRegistry()); |
| } |
| |
| @Override |
| public AesGcmKey createKey(AesGcmKeyFormat format) throws GeneralSecurityException { |
| return AesGcmKey.newBuilder() |
| .setKeyValue(ByteString.copyFrom(Random.randBytes(format.getKeySize()))) |
| .setVersion(getVersion()) |
| .build(); |
| } |
| }; |
| } |
| } |
| |
| private static KeyTemplate createKeyTemplate(int keySize, String keyType) { |
| AesGcmKeyFormat format = AesGcmKeyFormat.newBuilder().setKeySize(keySize).build(); |
| return KeyTemplate.create(keyType, format.toByteArray(), KeyTemplate.OutputPrefixType.TINK); |
| } |
| |
| @Test |
| public void testKeyTemplateCompatible_works() throws Exception { |
| String typeUrl = "some_type_url"; |
| TestKeyTypeManager manager = new TestKeyTypeManager(typeUrl); |
| KeyTypeManagerTestUtil.testKeyTemplateCompatible(manager, createKeyTemplate(16, typeUrl)); |
| } |
| |
| @Test |
| public void testKeyTemplateCompatible_wrongUrl_throws() throws Exception { |
| String typeUrl = "some_type_url"; |
| TestKeyTypeManager manager = new TestKeyTypeManager(typeUrl); |
| assertThrows( |
| AssertionError.class, |
| new ThrowingRunnable() { |
| @Override |
| public void run() throws Throwable { |
| KeyTypeManagerTestUtil.testKeyTemplateCompatible( |
| manager, createKeyTemplate(16, typeUrl + "wrong")); |
| } |
| }); |
| } |
| |
| @Test |
| public void testKeyTemplateCompatible_wrongKeySize_throws() throws Exception { |
| String typeUrl = "some_type_url"; |
| TestKeyTypeManager manager = new TestKeyTypeManager(typeUrl); |
| assertThrows( |
| GeneralSecurityException.class, |
| new ThrowingRunnable() { |
| @Override |
| public void run() throws Throwable { |
| KeyTypeManagerTestUtil.testKeyTemplateCompatible( |
| manager, createKeyTemplate(17, typeUrl)); |
| } |
| }); |
| } |
| |
| @Test |
| public void testKeyTemplateCompatible_properResult() throws Exception { |
| String typeUrl = "some_type_url"; |
| TestKeyTypeManager manager = new TestKeyTypeManager(typeUrl); |
| AesGcmKey key = |
| KeyTypeManagerTestUtil.testKeyTemplateCompatible(manager, createKeyTemplate(16, typeUrl)); |
| assertThat(key.getKeyValue()).hasSize(16); |
| } |
| } |