org.cryptoworkshop.ximix.common.asn1.message.KeyPairGenerateMessage.java Source code

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Here is the source code for org.cryptoworkshop.ximix.common.asn1.message.KeyPairGenerateMessage.java

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/**
 * Copyright 2013 Crypto Workshop Pty Ltd
 *
 * 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.
 */
package org.cryptoworkshop.ximix.common.asn1.message;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERSequence;
import org.cryptoworkshop.ximix.common.crypto.Algorithm;

/**
 * A carrier message for different messages associated with key generation steps.
 */
public class KeyPairGenerateMessage extends ASN1Object {
    private final Algorithm algorithm;
    private final Enum type;
    private final ASN1Encodable payload;

    /**
     * Base constructor.
     *
     * @param algorithm the algorithm this generation message is related to.
     * @param type the type representing the step in the generation process the payload relates to.
     * @param payload the payload containing additional data to be used by the reciever.
     */
    public KeyPairGenerateMessage(Algorithm algorithm, Enum type, ASN1Encodable payload) {
        this.algorithm = algorithm;
        this.type = type;
        this.payload = payload;
    }

    private KeyPairGenerateMessage(Enum[] types, ASN1Sequence seq) {
        this.algorithm = Algorithm.values()[ASN1Integer.getInstance(seq.getObjectAt(0)).getValue().intValue()];
        this.type = types[ASN1Integer.getInstance(seq.getObjectAt(1)).getValue().intValue()];
        this.payload = seq.getObjectAt(2);
    }

    public static final KeyPairGenerateMessage getInstance(Enum[] types, Object o) {
        if (o instanceof KeyPairGenerateMessage) {
            return (KeyPairGenerateMessage) o;
        } else if (o != null) {
            return new KeyPairGenerateMessage(types, ASN1Sequence.getInstance(o));
        }

        return null;
    }

    @Override
    public ASN1Primitive toASN1Primitive() {
        ASN1EncodableVector v = new ASN1EncodableVector();

        v.add(new ASN1Integer(algorithm.ordinal()));
        v.add(new ASN1Integer(type.ordinal()));
        v.add(payload);

        return new DERSequence(v);
    }

    public ASN1Encodable getPayload() {
        return payload;
    }

    public Algorithm getAlgorithm() {
        return algorithm;
    }

    public Enum getType() {
        return type;
    }
}