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/*
* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.security.provider;
import java.io.IOException;
import java.io.Serializable;
import java.security.DrbgParameters;
import java.security.SecureRandomParameters;
/**
* Exported and non-exported parameters that can be used by DRBGs.
*/
public class MoreDrbgParameters implements SecureRandomParameters, Serializable {
private static final long serialVersionUID = 9L;
final transient EntropySource es;
final String mech;
final String algorithm;
final boolean usedf;
final int strength;
final DrbgParameters.Capability capability;
// The following 2 fields will be reassigned in readObject and
// thus cannot be final
byte[] nonce;
byte[] personalizationString;
/**
* Creates a new {@code MoreDrbgParameters} object.
*
* @param es the {@link EntropySource} to use. If set to {@code null},
* a default entropy source will be used.
* @param mech mech name. If set to {@code null}, the one in
* securerandom.drbg.config is used. This argument is ignored
* when passing to HashDrbg/HmacDrbg/CtrDrbg.
* @param algorithm the requested algorithm to use. If set to {@code null},
* the algorithm will be decided by strength.
* @param nonce the nonce to use. If set to {@code null},
* a nonce will be assigned.
* @param usedf whether a derivation function should be used
* @param config a {@link DrbgParameters.Instantiation} object
*/
public MoreDrbgParameters(EntropySource es, String mech,
String algorithm, byte[] nonce, boolean usedf,
DrbgParameters.Instantiation config) {
this.mech = mech;
this.algorithm = algorithm;
this.es = es;
this.nonce = (nonce == null) ? null : nonce.clone();
this.usedf = usedf;
this.strength = config.getStrength();
this.capability = config.getCapability();
this.personalizationString = config.getPersonalizationString();
}
@Override
public String toString() {
return mech + "," + algorithm + "," + usedf + "," + strength
+ "," + capability + "," + personalizationString;
}
private void readObject(java.io.ObjectInputStream s)
throws IOException, ClassNotFoundException {
s.defaultReadObject();
if (nonce != null) {
nonce = nonce.clone();
}
if (personalizationString != null) {
personalizationString = personalizationString.clone();
}
if (capability == null) {
throw new IllegalArgumentException("Input data is corrupted");
}
}
}