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

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Here is the source code for org.cryptoworkshop.ximix.common.asn1.message.KeyGenerationParameters.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.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Sequence;

/**
 * Base class for carriers of key generation parameters.
 */
public abstract class KeyGenerationParameters extends ASN1Object {
    public static final int NAMED_PARAMETER_SET = 0;

    private final int type;

    /**
     * Base constructor.
     *
     * @param type the key generation parameter type.
     */
    protected KeyGenerationParameters(int type) {
        this.type = type;
    }

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

            if (ASN1Integer.getInstance(seq.getObjectAt(0)).getValue().intValue() == NAMED_PARAMETER_SET) {
                return new NamedKeyGenParams(seq);
            }
        }

        return null;
    }

    public int getType() {
        return type;
    }
}