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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 1.8 and up. The APIs are designed primarily to be used in conjunction with the BC LTS provider but may also be used with other providers providing cryptographic services.

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package org.bouncycastle.dvcs;

import org.bouncycastle.asn1.dvcs.Data;
import org.bouncycastle.cms.CMSException;
import org.bouncycastle.cms.CMSSignedData;

/**
 * Data piece of DVCS request to VSD service (Verify Signed Document).
 * It contains VSD-specific selector interface.
 * Note: the request should contain CMS SignedData object as message.
 * 
 * This objects are constructed internally,
 * to build DVCS request to VSD service use VSDRequestBuilder.
 * 
 */
public class VSDRequestData
    extends DVCSRequestData
{
    private CMSSignedData doc;

    VSDRequestData(Data data)
        throws DVCSConstructionException
    {
        super(data);
        initDocument();
    }

    private void initDocument()
        throws DVCSConstructionException
    {
        if (doc == null)
        {
            if (data.getMessage() == null)
            {
                throw new DVCSConstructionException("DVCSRequest.data.message should be specified for VSD service");
            }
            try
            {
                doc = new CMSSignedData(data.getMessage().getOctets());
            }
            catch (CMSException e)
            {
                throw new DVCSConstructionException("Can't read CMS SignedData from input", e);
            }
        }
    }

    /**
     * Get contained message (data to be certified).
     *
     * @return the contained message.
     */
    public byte[] getMessage()
    {
        return data.getMessage().getOctets();
    }

    /**
     * Get the CMS SignedData object represented by the encoded message.
     *
     * @return the parsed contents of the contained message as a CMS SignedData object.
     */
    public CMSSignedData getParsedMessage()
    {
        return doc;
    }
}