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

Introduction

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

Source

/**
 * 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.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERUTF8String;

/**
 * Carrier class for key generation parameters.
 */
public class KeyGenParams extends ASN1Object {
    private final String domainParameters;

    /**
     * Base constructor.
     *
     * @param domainParameters an identifier that can be used by the key generator to find the domain parameters to use.
     */
    public KeyGenParams(String domainParameters) {
        this.domainParameters = domainParameters;
    }

    private KeyGenParams(ASN1Sequence seq) {
        this.domainParameters = DERUTF8String.getInstance(seq.getObjectAt(0)).getString();
    }

    public static final KeyGenParams getInstance(Object o) {
        if (o instanceof KeyGenParams) {
            return (KeyGenParams) o;
        } else if (o != null) {
            return new KeyGenParams(ASN1Sequence.getInstance(o));
        }

        return null;
    }

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

        v.add(new DERUTF8String(domainParameters));

        return new DERSequence(v);
    }

    public String getDomainParameters() {
        return domainParameters;
    }
}