/**
* 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.gateway.services.security.impl;
import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.Signature;
import java.security.SignatureException;
import java.util.Map;
import org.apache.hadoop.gateway.GatewayMessages;
import org.apache.hadoop.gateway.config.GatewayConfig;
import org.apache.hadoop.gateway.i18n.messages.MessagesFactory;
import org.apache.hadoop.gateway.services.security.AliasService;
import org.apache.hadoop.gateway.services.security.CryptoService;
import org.apache.hadoop.gateway.services.security.EncryptionResult;
import org.apache.hadoop.gateway.services.security.KeystoreService;
import org.apache.hadoop.gateway.services.security.KeystoreServiceException;
import org.apache.hadoop.gateway.services.ServiceLifecycleException;
public class DefaultCryptoService implements CryptoService {
private static final String GATEWAY_IDENTITY_PASSPHRASE = "gateway-identity-passphrase";
private static final GatewayMessages LOG = MessagesFactory.get( GatewayMessages.class );
private AliasService as = null;
private KeystoreService ks = null;
public void setKeystoreService(KeystoreService ks) {
this.ks = ks;
}
public CryptoService setAliasService(AliasService as) {
this.as = as;
return this;
}
@Override
public void init(GatewayConfig config, Map<String, String> options)
throws ServiceLifecycleException {
if (as == null) {
throw new ServiceLifecycleException("Alias service is not set");
}
}
@Override
public void start() throws ServiceLifecycleException {
// TODO Auto-generated method stub
}
@Override
public void stop() throws ServiceLifecycleException {
// TODO Auto-generated method stub
}
@Override
public void createAndStoreEncryptionKeyForCluster(String clusterName, String alias) {
as.generateAliasForCluster(clusterName, alias);
}
@Override
public EncryptionResult encryptForCluster(String clusterName, String alias, byte[] clear) {
char[] password = as.getPasswordFromAliasForCluster(clusterName, alias);
if (password != null) {
AESEncryptor aes = null;
try {
aes = new AESEncryptor(new String(password));
return aes.encrypt(clear);
} catch (NoSuchAlgorithmException e1) {
LOG.failedToEncryptPasswordForCluster( clusterName, e1 );
} catch (InvalidKeyException e) {
LOG.failedToEncryptPasswordForCluster( clusterName, e );
} catch (Exception e) {
LOG.failedToEncryptPasswordForCluster( clusterName, e );
}
}
return null;
}
@Override
public byte[] decryptForCluster(String clusterName, String alias, String cipherText) {
try {
return decryptForCluster(clusterName, alias, cipherText.getBytes("UTF8"), null, null);
} catch (UnsupportedEncodingException e) {
LOG.unsupportedEncoding( e );
}
return null;
}
@Override
public byte[] decryptForCluster(String clusterName, String alias, byte[] cipherText, byte[] iv, byte[] salt) {
char[] password = as.getPasswordFromAliasForCluster(clusterName, alias);
if (password != null) {
AESEncryptor aes = new AESEncryptor(new String(password));
try {
return aes.decrypt(salt, iv, cipherText);
} catch (Exception e) {
LOG.failedToDecryptPasswordForCluster( clusterName, e );
}
}
else {
LOG.failedToDecryptCipherForClusterNullPassword( clusterName );
}
return null;
}
@Override
public boolean verify(String algorithm, String alias, String signed, byte[] signature) {
boolean verified = false;
try {
Signature sig=Signature.getInstance(algorithm);
sig.initVerify(ks.getKeystoreForGateway().getCertificate(alias).getPublicKey());
sig.update(signed.getBytes("UTF-8"));
verified = sig.verify(signature);
} catch (SignatureException e) {
LOG.failedToVerifySignature( e );
} catch (NoSuchAlgorithmException e) {
LOG.failedToVerifySignature( e );
} catch (InvalidKeyException e) {
LOG.failedToVerifySignature( e );
} catch (KeyStoreException e) {
LOG.failedToVerifySignature( e );
} catch (UnsupportedEncodingException e) {
LOG.failedToVerifySignature( e );
} catch (KeystoreServiceException e) {
LOG.failedToVerifySignature( e );
}
LOG.signatureVerified( verified );
return verified;
}
@Override
public byte[] sign(String algorithm, String alias, String payloadToSign) {
try {
char[] passphrase = as.getPasswordFromAliasForGateway(GATEWAY_IDENTITY_PASSPHRASE);
PrivateKey privateKey = (PrivateKey) ks.getKeyForGateway(alias, passphrase);
Signature signature = Signature.getInstance(algorithm);
signature.initSign(privateKey);
signature.update(payloadToSign.getBytes("UTF-8"));
return signature.sign();
} catch (NoSuchAlgorithmException e) {
LOG.failedToSignData( e );
} catch (InvalidKeyException e) {
LOG.failedToSignData( e );
} catch (SignatureException e) {
LOG.failedToSignData( e );
} catch (UnsupportedEncodingException e) {
LOG.failedToSignData( e );
} catch (KeystoreServiceException e) {
LOG.failedToSignData( e );
}
return null;
}
}