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* 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
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.hadoop.hbase.regionserver;
import static org.junit.Assert.*;
import java.security.Key;
import java.security.SecureRandom;
import java.util.ArrayList;
import java.util.List;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.Waiter.Predicate;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.io.crypto.Encryption;
import org.apache.hadoop.hbase.io.crypto.KeyProviderForTesting;
import org.apache.hadoop.hbase.io.crypto.aes.AES;
import org.apache.hadoop.hbase.io.hfile.CacheConfig;
import org.apache.hadoop.hbase.io.hfile.HFile;
import org.apache.hadoop.hbase.security.EncryptionUtil;
import org.apache.hadoop.hbase.security.User;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category(MediumTests.class)
public class TestEncryptionKeyRotation {
private static final Log LOG = LogFactory.getLog(TestEncryptionKeyRotation.class);
private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
private static final Configuration conf = TEST_UTIL.getConfiguration();
private static final Key initialCFKey;
private static final Key secondCFKey;
static {
// Create the test encryption keys
SecureRandom rng = new SecureRandom();
byte[] keyBytes = new byte[AES.KEY_LENGTH];
rng.nextBytes(keyBytes);
initialCFKey = new SecretKeySpec(keyBytes, "AES");
rng.nextBytes(keyBytes);
secondCFKey = new SecretKeySpec(keyBytes, "AES");
}
@BeforeClass
public static void setUp() throws Exception {
conf.setInt("hfile.format.version", 3);
conf.set(HConstants.CRYPTO_KEYPROVIDER_CONF_KEY, KeyProviderForTesting.class.getName());
conf.set(HConstants.CRYPTO_MASTERKEY_NAME_CONF_KEY, "hbase");
// Enable online schema updates
conf.setBoolean("hbase.online.schema.update.enable", true);
// Start the minicluster
TEST_UTIL.startMiniCluster(1);
}
@AfterClass
public static void tearDown() throws Exception {
TEST_UTIL.shutdownMiniCluster();
}
@Test
public void testCFKeyRotation() throws Exception {
// Create the table schema
HTableDescriptor htd = new HTableDescriptor(TableName.valueOf("default",
"testCFKeyRotation"));
HColumnDescriptor hcd = new HColumnDescriptor("cf");
hcd.setEncryptionType("AES");
hcd.setEncryptionKey(EncryptionUtil.wrapKey(conf, "hbase", initialCFKey));
htd.addFamily(hcd);
// Create the table and some on disk files
createTableAndFlush(htd);
// Verify we have store file(s) with the initial key
final List<Path> initialPaths = findStorefilePaths(htd.getTableName());
assertTrue(initialPaths.size() > 0);
for (Path path: initialPaths) {
assertTrue("Store file " + path + " has incorrect key",
Bytes.equals(initialCFKey.getEncoded(), extractHFileKey(path)));
}
// Update the schema with a new encryption key
hcd = htd.getFamily(Bytes.toBytes("cf"));
hcd.setEncryptionKey(EncryptionUtil.wrapKey(conf,
conf.get(HConstants.CRYPTO_MASTERKEY_NAME_CONF_KEY, User.getCurrent().getShortName()),
secondCFKey));
TEST_UTIL.getHBaseAdmin().modifyColumn(htd.getTableName(), hcd);
Thread.sleep(5000); // Need a predicate for online schema change
// And major compact
TEST_UTIL.getHBaseAdmin().majorCompact(htd.getTableName());
TEST_UTIL.waitFor(30000, 1000, true, new Predicate<Exception>() {
@Override
public boolean evaluate() throws Exception {
// When compaction has finished, all of the original files will be
// gone
boolean found = false;
for (Path path: initialPaths) {
found = TEST_UTIL.getTestFileSystem().exists(path);
if (found) {
LOG.info("Found " + path);
break;
}
}
return !found;
}
});
// Verify we have store file(s) with only the new key
List<Path> pathsAfterCompaction = findStorefilePaths(htd.getTableName());
assertTrue(pathsAfterCompaction.size() > 0);
for (Path path: pathsAfterCompaction) {
assertFalse("Store file " + path + " retains initial key",
Bytes.equals(initialCFKey.getEncoded(), extractHFileKey(path)));
assertTrue("Store file " + path + " has incorrect key",
Bytes.equals(secondCFKey.getEncoded(), extractHFileKey(path)));
}
}
@Test
public void testMasterKeyRotation() throws Exception {
// Create the table schema
HTableDescriptor htd = new HTableDescriptor(TableName.valueOf("default",
"testMasterKeyRotation"));
HColumnDescriptor hcd = new HColumnDescriptor("cf");
hcd.setEncryptionType("AES");
hcd.setEncryptionKey(EncryptionUtil.wrapKey(conf, "hbase", initialCFKey));
htd.addFamily(hcd);
// Create the table and some on disk files
createTableAndFlush(htd);
// Verify we have store file(s) with the initial key
List<Path> storeFilePaths = findStorefilePaths(htd.getTableName());
assertTrue(storeFilePaths.size() > 0);
for (Path path: storeFilePaths) {
assertTrue("Store file " + path + " has incorrect key",
Bytes.equals(initialCFKey.getEncoded(), extractHFileKey(path)));
}
// Now shut down the HBase cluster
TEST_UTIL.shutdownMiniHBaseCluster();
// "Rotate" the master key
conf.set(HConstants.CRYPTO_MASTERKEY_NAME_CONF_KEY, "other");
conf.set(HConstants.CRYPTO_MASTERKEY_ALTERNATE_NAME_CONF_KEY, "hbase");
// Start the cluster back up
TEST_UTIL.startMiniHBaseCluster(1, 1);
// Verify the table can still be loaded
TEST_UTIL.waitTableAvailable(htd.getName(), 5000);
// Double check that the store file keys can be unwrapped
storeFilePaths = findStorefilePaths(htd.getTableName());
assertTrue(storeFilePaths.size() > 0);
for (Path path: storeFilePaths) {
assertTrue("Store file " + path + " has incorrect key",
Bytes.equals(initialCFKey.getEncoded(), extractHFileKey(path)));
}
}
private static List<Path> findStorefilePaths(TableName tableName) throws Exception {
List<Path> paths = new ArrayList<Path>();
for (HRegion region:
TEST_UTIL.getRSForFirstRegionInTable(tableName).getOnlineRegions(tableName)) {
for (Store store: region.getStores().values()) {
for (StoreFile storefile: store.getStorefiles()) {
paths.add(storefile.getPath());
}
}
}
return paths;
}
private void createTableAndFlush(HTableDescriptor htd) throws Exception {
HColumnDescriptor hcd = htd.getFamilies().iterator().next();
// Create the test table
TEST_UTIL.getHBaseAdmin().createTable(htd);
TEST_UTIL.waitTableAvailable(htd.getName(), 5000);
// Create a store file
Table table = new HTable(conf, htd.getTableName());
try {
table.put(new Put(Bytes.toBytes("testrow"))
.add(hcd.getName(), Bytes.toBytes("q"), Bytes.toBytes("value")));
} finally {
table.close();
}
TEST_UTIL.getHBaseAdmin().flush(htd.getTableName());
}
private static byte[] extractHFileKey(Path path) throws Exception {
HFile.Reader reader = HFile.createReader(TEST_UTIL.getTestFileSystem(), path,
new CacheConfig(conf), conf);
try {
reader.loadFileInfo();
Encryption.Context cryptoContext = reader.getFileContext().getEncryptionContext();
assertNotNull("Reader has a null crypto context", cryptoContext);
Key key = cryptoContext.getKey();
assertNotNull("Crypto context has no key", key);
return key.getEncoded();
} finally {
reader.close();
}
}
}