org.bouncycastle.dvcs.SignedDVCSMessageGenerator Maven / Gradle / Ivy

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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. The APIs are designed primarily to be used in conjunction with the BC FIPS provider. The APIs may also be used with other providers although if being used in a FIPS context it is the responsibility of the user to ensure that any other providers used are FIPS certified.

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package org.bouncycastle.dvcs;

import java.io.IOException;

import org.bouncycastle.asn1.ASN1Encoding;
import org.bouncycastle.cms.CMSException;
import org.bouncycastle.cms.CMSProcessableByteArray;
import org.bouncycastle.cms.CMSSignedData;
import org.bouncycastle.cms.CMSSignedDataGenerator;

public class SignedDVCSMessageGenerator
{
    private final CMSSignedDataGenerator signedDataGen;

    public SignedDVCSMessageGenerator(CMSSignedDataGenerator signedDataGen)
    {
        this.signedDataGen = signedDataGen;
    }

    /**
     * Creates a CMSSignedData object containing the passed in DVCSMessage
     *
     * @param message the request to be signed.
     * @return an encapsulating SignedData object.
     * @throws DVCSException in the event of failure to encode the request or sign it.
     */
    public CMSSignedData build(DVCSMessage message)
        throws DVCSException
    {
        try
        {
            byte[] encapsulatedData = message.getContent().toASN1Primitive().getEncoded(ASN1Encoding.DER);

            return signedDataGen.generate(new CMSProcessableByteArray(message.getContentType(), encapsulatedData), true);
        }
        catch (CMSException e)
        {
            throw new DVCSException("Could not sign DVCS request", e);
        }
        catch (IOException e)
        {
            throw new DVCSException("Could not encode DVCS request", e);
        }
    }
}