de.tsenger.animamea.asn1.CVCertificate.java Source code

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Here is the source code for de.tsenger.animamea.asn1.CVCertificate.java

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/**
 *  Copyright 2011, Tobias Senger
 *  
 *  This file is part of animamea.
 *
 *  Animamea is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Animamea 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 for more details.
 *
 *  You should have received a copy of the GNU General Public License   
 *  along with animamea.  If not, see <http://www.gnu.org/licenses/>.
 */
package de.tsenger.animamea.asn1;

import java.io.IOException;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1StreamParser;
import org.bouncycastle.asn1.BERTags;
import org.bouncycastle.asn1.DERApplicationSpecific;

/**
 * @author Tobias Senger (tobias@t-senger.de)
 *
 */
public class CVCertificate extends ASN1Object {

    private CVCertBody certBody = null;
    private CVCertSignature certSignature = null;

    public CVCertificate(byte[] in) throws IllegalArgumentException, IOException {
        ASN1StreamParser asn1Parser = new ASN1StreamParser(in);

        DERApplicationSpecific cvcert = (DERApplicationSpecific) asn1Parser.readObject();
        if (cvcert.getApplicationTag() != 0x21)
            throw new IllegalArgumentException("Can't find a CV Certificate");

        ASN1Sequence derCert = (ASN1Sequence) cvcert.getObject(BERTags.SEQUENCE); // Das CV Cerificate ist eine Sequence

        DERApplicationSpecific body = (DERApplicationSpecific) derCert.getObjectAt(0); //Das erste Objekt des Certificates ist der Cert-Body
        if (body.getApplicationTag() != 0x4E)
            throw new IllegalArgumentException("Can't find a Body in the CV Certificate");

        certBody = new CVCertBody(body);

        DERApplicationSpecific signature = (DERApplicationSpecific) derCert.getObjectAt(1); //Das zweite Objekt des Certificates ist die Signatur
        if (signature.getApplicationTag() != 0x37)
            throw new IllegalArgumentException("Can't find a Signature in the CV Certificate");

        certSignature = new CVCertSignature(signature.getContents());

    }

    public CVCertSignature getSignature() {
        return certSignature;
    }

    public CVCertBody getBody() {
        return certBody;
    }

    /** 
     * The definition of CVCertificate is
      * <pre>
      * CVCertificate ::=  SEQUENCE {
      *      body        CVCertBody
      *      signature   CVCertSignature
      * }
      * </pre>
     */
    @Override

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

        v.add(certBody);
        v.add(certSignature);

        return new DERApplicationSpecific(0x21, v);
    }

}