| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.hadoop.fs.s3a; |
| |
| import java.io.IOException; |
| |
| import com.amazonaws.services.s3.model.ObjectMetadata; |
| |
| import org.apache.commons.codec.digest.DigestUtils; |
| import org.apache.commons.net.util.Base64; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| |
| import static org.apache.hadoop.fs.s3a.Constants.SERVER_SIDE_ENCRYPTION_KEY; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| |
| public final class EncryptionTestUtils { |
| |
| /** Private constructor */ |
| private EncryptionTestUtils() { |
| } |
| |
| public static final String AWS_KMS_SSE_ALGORITHM = "aws:kms"; |
| |
| public static final String SSE_C_ALGORITHM = "AES256"; |
| |
| /** |
| * Decodes the SERVER_SIDE_ENCRYPTION_KEY from base64 into an AES key, then |
| * gets the md5 of it, then encodes it in base64 so it will match the version |
| * that AWS returns to us. |
| * |
| * @return md5'd base64 encoded representation of the server side encryption |
| * key |
| */ |
| public static String convertKeyToMd5(FileSystem fs) { |
| String base64Key = fs.getConf().getTrimmed( |
| SERVER_SIDE_ENCRYPTION_KEY |
| ); |
| byte[] key = Base64.decodeBase64(base64Key); |
| byte[] md5 = DigestUtils.md5(key); |
| return Base64.encodeBase64String(md5).trim(); |
| } |
| |
| /** |
| * Assert that a path is encrypted with right encryption settings. |
| * @param path file path. |
| * @param algorithm encryption algorithm. |
| * @param kmsKeyArn full kms key. |
| */ |
| public static void assertEncrypted(S3AFileSystem fs, |
| final Path path, |
| final S3AEncryptionMethods algorithm, |
| final String kmsKeyArn) |
| throws IOException { |
| ObjectMetadata md = fs.getObjectMetadata(path); |
| String details = String.format( |
| "file %s with encryption algorithm %s and key %s", |
| path, |
| md.getSSEAlgorithm(), |
| md.getSSEAwsKmsKeyId()); |
| switch(algorithm) { |
| case SSE_C: |
| assertNull("Metadata algorithm should have been null in " |
| + details, |
| md.getSSEAlgorithm()); |
| assertEquals("Wrong SSE-C algorithm in " |
| + details, |
| SSE_C_ALGORITHM, md.getSSECustomerAlgorithm()); |
| String md5Key = convertKeyToMd5(fs); |
| assertEquals("getSSECustomerKeyMd5() wrong in " + details, |
| md5Key, md.getSSECustomerKeyMd5()); |
| break; |
| case SSE_KMS: |
| assertEquals("Wrong algorithm in " + details, |
| AWS_KMS_SSE_ALGORITHM, md.getSSEAlgorithm()); |
| assertEquals("Wrong KMS key in " + details, |
| kmsKeyArn, |
| md.getSSEAwsKmsKeyId()); |
| break; |
| default: |
| assertEquals("AES256", md.getSSEAlgorithm()); |
| } |
| } |
| |
| } |