001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.io.crypto;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertTrue;
022
023import java.io.ByteArrayInputStream;
024import java.io.ByteArrayOutputStream;
025import java.security.Key;
026import javax.crypto.spec.SecretKeySpec;
027import org.apache.hadoop.conf.Configuration;
028import org.apache.hadoop.hbase.HBaseClassTestRule;
029import org.apache.hadoop.hbase.HBaseConfiguration;
030import org.apache.hadoop.hbase.HConstants;
031import org.apache.hadoop.hbase.testclassification.MiscTests;
032import org.apache.hadoop.hbase.testclassification.SmallTests;
033import org.apache.hadoop.hbase.util.Bytes;
034import org.junit.ClassRule;
035import org.junit.Test;
036import org.junit.experimental.categories.Category;
037import org.slf4j.Logger;
038import org.slf4j.LoggerFactory;
039
040@Category({MiscTests.class, SmallTests.class})
041public class TestEncryption {
042
043  @ClassRule
044  public static final HBaseClassTestRule CLASS_RULE =
045      HBaseClassTestRule.forClass(TestEncryption.class);
046
047  private static final Logger LOG = LoggerFactory.getLogger(TestEncryption.class);
048
049  @Test
050  public void testSmallBlocks() throws Exception {
051    byte[] key = new byte[16];
052    Bytes.random(key);
053    byte[] iv = new byte[16];
054    Bytes.random(iv);
055    for (int size: new int[] { 4, 8, 16, 32, 64, 128, 256, 512 } ) {
056      checkTransformSymmetry(key, iv, getRandomBlock(size));
057    }
058  }
059
060  @Test
061  public void testLargeBlocks() throws Exception {
062    byte[] key = new byte[16];
063    Bytes.random(key);
064    byte[] iv = new byte[16];
065    Bytes.random(iv);
066    for (int size: new int[] { 256 * 1024, 512 * 1024, 1024 * 1024 } ) {
067      checkTransformSymmetry(key, iv, getRandomBlock(size));
068    }
069  }
070
071  @Test
072  public void testOddSizedBlocks() throws Exception {
073    byte[] key = new byte[16];
074    Bytes.random(key);
075    byte[] iv = new byte[16];
076    Bytes.random(iv);
077    for (int size: new int[] { 3, 7, 11, 23, 47, 79, 119, 175 } ) {
078      checkTransformSymmetry(key, iv, getRandomBlock(size));
079    }
080  }
081
082  @Test
083  public void testTypicalHFileBlocks() throws Exception {
084    byte[] key = new byte[16];
085    Bytes.random(key);
086    byte[] iv = new byte[16];
087    Bytes.random(iv);
088    for (int size: new int[] { 4 * 1024, 8 * 1024, 64 * 1024, 128 * 1024 } ) {
089      checkTransformSymmetry(key, iv, getRandomBlock(size));
090    }
091  }
092
093  private void checkTransformSymmetry(byte[] keyBytes, byte[] iv, byte[] plaintext)
094      throws Exception {
095    LOG.info("checkTransformSymmetry: AES, plaintext length = " + plaintext.length);
096
097    Configuration conf = HBaseConfiguration.create();
098    String algorithm =
099        conf.get(HConstants.CRYPTO_KEY_ALGORITHM_CONF_KEY, HConstants.CIPHER_AES);
100    Cipher aes = Encryption.getCipher(conf, algorithm);
101    Key key = new SecretKeySpec(keyBytes, algorithm);
102
103    Encryptor e = aes.getEncryptor();
104    e.setKey(key);
105    e.setIv(iv);
106    e.reset();
107    ByteArrayOutputStream encOut = new ByteArrayOutputStream();
108    Encryption.encrypt(encOut, plaintext, 0, plaintext.length, e);
109    byte[] encrypted = encOut.toByteArray();
110
111    Decryptor d = aes.getDecryptor();
112    d.setKey(key);
113    d.setIv(iv);
114    d.reset();
115    ByteArrayInputStream encIn = new ByteArrayInputStream(encrypted);
116    ByteArrayOutputStream decOut = new ByteArrayOutputStream();
117    Encryption.decrypt(decOut, encIn, plaintext.length, d);
118
119    byte[] result = decOut.toByteArray();
120    assertEquals("Decrypted result has different length than plaintext",
121      result.length, plaintext.length);
122    assertTrue("Transformation was not symmetric",
123      Bytes.equals(result, plaintext));
124  }
125
126  private byte[] getRandomBlock(int size) {
127    byte[] b = new byte[size];
128    Bytes.random(b);
129    return b;
130  }
131
132}