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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 to JDK 1.8. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.

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package org.bouncycastle.dvcs;

import java.io.IOException;
import java.util.Date;

import org.bouncycastle.asn1.dvcs.DVCSRequestInformationBuilder;
import org.bouncycastle.asn1.dvcs.DVCSTime;
import org.bouncycastle.asn1.dvcs.Data;
import org.bouncycastle.asn1.dvcs.ServiceType;
import org.bouncycastle.cms.CMSSignedData;

/**
 * Builder of DVCS requests to VSD service (Verify Signed Document).
 */
public class VSDRequestBuilder
    extends DVCSRequestBuilder
{
    public VSDRequestBuilder()
    {
        super(new DVCSRequestInformationBuilder(ServiceType.VSD));
    }

    public void setRequestTime(Date requestTime)
    {
        requestInformationBuilder.setRequestTime(new DVCSTime(requestTime));
    }

    /**
     * Build VSD request from CMS SignedData object.
     *
     * @param document
     * @return
     * @throws DVCSException
     */
    public DVCSRequest build(CMSSignedData document)
        throws DVCSException
    {
        try
        {
            Data data = new Data(document.getEncoded());

            return createDVCRequest(data);
        }
        catch (IOException e)
        {
            throw new DVCSException("Failed to encode CMS signed data", e);
        }
    }
}