/*
* 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.harmony.security.provider.crypto;
import org.apache.harmony.security.asn1.ASN1Integer;
import org.apache.harmony.security.asn1.ASN1Sequence;
import org.apache.harmony.security.asn1.ASN1Type;
import org.apache.harmony.security.asn1.BerInputStream;
/**
* The auxiliary class providing means to process ASN1Sequence of three Integers.
* Such sequences are parts of ASN1 encoded formats for DSA private and public keys.
*/
class ThreeIntegerSequence {
byte[] p, q, g;
private byte[] encoding;
ThreeIntegerSequence(byte[] p, byte[] q, byte[] g) {
this.p = p;
this.q = q;
this.g = g;
encoding = null;
}
public byte[] getEncoded() {
if (encoding == null) {
encoding = ASN1.encode(this);
}
return encoding;
}
public static final ASN1Sequence ASN1 = new ASN1Sequence(new ASN1Type[] {
ASN1Integer.getInstance(), ASN1Integer.getInstance(),
ASN1Integer.getInstance() }) {
protected Object getDecodedObject(BerInputStream in) {
Object[] values = (Object[]) in.content;
return new ThreeIntegerSequence((byte[]) values[0],
(byte[]) values[1], (byte[]) values[2]);
}
protected void getValues(Object object, Object[] values) {
ThreeIntegerSequence mySeq = (ThreeIntegerSequence) object;
values[0] = mySeq.p;
values[1] = mySeq.q;
values[2] = mySeq.g;
}
};
}