/*
* 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.sshd.common.keyprovider;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.security.KeyPair;
import java.util.ArrayList;
import java.util.List;
import org.apache.sshd.common.util.SecurityUtils;
import org.bouncycastle.openssl.PEMReader;
import org.bouncycastle.openssl.PasswordFinder;
/**
* This host key provider loads private keys from the specified files.
*
* Note that this class has a direct dependency on BouncyCastle and won't work
* unless it has been correctly registered as a security provider.
*
* @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
*/
public class FileKeyPairProvider extends AbstractKeyPairProvider {
private String[] files;
private PasswordFinder passwordFinder;
public FileKeyPairProvider() {
}
public FileKeyPairProvider(String[] files) {
this.files = files;
}
public FileKeyPairProvider(String[] files, PasswordFinder passwordFinder) {
this.files = files;
this.passwordFinder = passwordFinder;
}
public String[] getFiles() {
return files;
}
public void setFiles(String[] files) {
this.files = files;
}
public PasswordFinder getPasswordFinder() {
return passwordFinder;
}
public void setPasswordFinder(PasswordFinder passwordFinder) {
this.passwordFinder = passwordFinder;
}
public KeyPair[] loadKeys() {
if (!SecurityUtils.isBouncyCastleRegistered()) {
throw new IllegalStateException("BouncyCastle must be registered as a JCE provider");
}
List<KeyPair> keys = new ArrayList<KeyPair>();
for (int i = 0; i < files.length; i++) {
try {
PEMReader r = new PEMReader(new InputStreamReader(new FileInputStream(files[i])), passwordFinder);
try {
Object o = r.readObject();
if (o instanceof KeyPair) {
keys.add((KeyPair) o);
}
} finally {
r.close();
}
} catch (Exception e) {
log.warn("Unable to read key {}: {}", files[i], e);
}
}
return keys.toArray(new KeyPair[keys.size()]);
}
}