/**
* 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.camel.converter.crypto;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.camel.Exchange;
import org.apache.camel.util.ObjectHelper;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPPrivateKey;
import org.bouncycastle.openpgp.PGPSecretKeyRingCollection;
import org.bouncycastle.openpgp.PGPUtil;
/**
* Caches a Secret Keyring. Assumes that the password for all private keys is
* the same.
*
*/
public class DefaultPGPSecretKeyAccessor implements PGPSecretKeyAccessor {
private final Map<String, List<PGPSecretKeyAndPrivateKeyAndUserId>> userIdPart2SecretKeyList = new HashMap<String, List<PGPSecretKeyAndPrivateKeyAndUserId>>(
3);
private final Map<Long, PGPPrivateKey> keyId2PrivateKey = new HashMap<Long, PGPPrivateKey>(3);
private final PGPSecretKeyRingCollection pgpSecretKeyring;
private final String password;
private final String provider;
/**
*
* @param secretKeyRing
* secret key ring as byte array
* @param password
* password for the private keys, assuming that all private keys
* have the same password
* @param provider
* @throws PGPException
* @throws IOException
*/
public DefaultPGPSecretKeyAccessor(byte[] secretKeyRing, String password, String provider) throws PGPException, IOException {
ObjectHelper.notNull(secretKeyRing, "secretKeyRing");
ObjectHelper.notEmpty(password, "password");
ObjectHelper.notEmpty(provider, "provider");
pgpSecretKeyring = new PGPSecretKeyRingCollection(PGPUtil.getDecoderStream(new ByteArrayInputStream(secretKeyRing)));
this.password = password;
this.provider = provider;
}
@Override
public List<PGPSecretKeyAndPrivateKeyAndUserId> getSignerKeys(Exchange exchange, List<String> useridParts) throws Exception {
List<PGPSecretKeyAndPrivateKeyAndUserId> result = new ArrayList<PGPSecretKeyAndPrivateKeyAndUserId>(3);
for (String useridPart : useridParts) {
List<PGPSecretKeyAndPrivateKeyAndUserId> partResult = userIdPart2SecretKeyList.get(useridPart);
if (partResult == null) {
partResult = PGPDataFormatUtil.findSecretKeysWithPrivateKeyAndUserId(Collections.singletonMap(useridPart, password),
provider, pgpSecretKeyring);
userIdPart2SecretKeyList.put(useridPart, partResult);
}
result.addAll(partResult);
}
return result;
}
@Override
public PGPPrivateKey getPrivateKey(Exchange exchange, long keyId) throws Exception {
Long keyIdLong = Long.valueOf(keyId);
PGPPrivateKey result = keyId2PrivateKey.get(keyIdLong);
if (result == null) {
result = PGPDataFormatUtil.findPrivateKeyWithkeyId(keyId, password, null, provider, pgpSecretKeyring);
if (result != null) {
keyId2PrivateKey.put(keyIdLong, result);
}
}
return result;
}
}