net.schmizz.sshj.transport.random.BouncyCastleRandom Maven / Gradle / Ivy
/*
* Copyright 2010-2012 sshj contributors
*
* Licensed 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.
*
* This file may incorporate work covered by the following copyright and
* permission notice:
*
* 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 net.schmizz.sshj.transport.random;
import org.bouncycastle.crypto.prng.RandomGenerator;
import org.bouncycastle.crypto.prng.VMPCRandomGenerator;
import java.security.SecureRandom;
/**
* BouncyCastle Random. This pseudo random number generator uses the a very fast PRNG from BouncyCastle.
* The JRE random will be used when creating a new generator to add some random data to the seed.
*/
public class BouncyCastleRandom
implements Random {
/** Named factory for the BouncyCastle Random */
public static class Factory
implements net.schmizz.sshj.common.Factory {
@Override
public Random create() {
return new BouncyCastleRandom();
}
}
private final RandomGenerator random = new VMPCRandomGenerator();
public BouncyCastleRandom() {
byte[] seed = new SecureRandom().generateSeed(8);
random.addSeedMaterial(seed);
}
@Override
public void fill(byte[] bytes, int start, int len) {
random.nextBytes(bytes, start, len);
}
}