org.bouncycastle.cert.ocsp.BasicOCSPRespBuilder Maven / Gradle / Ivy

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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.cert.ocsp;

import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Encoding;
import org.bouncycastle.asn1.ASN1GeneralizedTime;
import org.bouncycastle.asn1.DERBitString;
import org.bouncycastle.asn1.DERGeneralizedTime;
import org.bouncycastle.asn1.DERNull;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.ocsp.BasicOCSPResponse;
import org.bouncycastle.asn1.ocsp.CertStatus;
import org.bouncycastle.asn1.ocsp.ResponseData;
import org.bouncycastle.asn1.ocsp.RevokedInfo;
import org.bouncycastle.asn1.ocsp.SingleResponse;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x509.CRLReason;
import org.bouncycastle.asn1.x509.Extensions;
import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
import org.bouncycastle.cert.X509CertificateHolder;
import org.bouncycastle.operator.ContentSigner;
import org.bouncycastle.operator.DigestCalculator;

/**
 * Generator for basic OCSP response objects.
 */
public class BasicOCSPRespBuilder
{
    private List            list = new ArrayList();
    private Extensions  responseExtensions = null;
    private RespID          responderID;

    private class ResponseObject
    {
        CertificateID         certId;
        CertStatus            certStatus;
        DERGeneralizedTime    thisUpdate;
        DERGeneralizedTime    nextUpdate;
        Extensions        extensions;

        public ResponseObject(
            CertificateID     certId,
            CertificateStatus certStatus,
            Date              thisUpdate,
            Date              nextUpdate,
            Extensions    extensions)
        {
            this.certId = certId;

            if (certStatus == null)
            {
                this.certStatus = new CertStatus();
            }
            else if (certStatus instanceof UnknownStatus)
            {
                this.certStatus = new CertStatus(2, DERNull.INSTANCE);
            }
            else
            {
                RevokedStatus rs = (RevokedStatus)certStatus;

                if (rs.hasRevocationReason())
                {
                    this.certStatus = new CertStatus(
                                            new RevokedInfo(new ASN1GeneralizedTime(rs.getRevocationTime()), CRLReason.lookup(rs.getRevocationReason())));
                }
                else
                {
                    this.certStatus = new CertStatus(
                                            new RevokedInfo(new ASN1GeneralizedTime(rs.getRevocationTime()), null));
                }
            }

            this.thisUpdate = new DERGeneralizedTime(thisUpdate);

            if (nextUpdate != null)
            {
                this.nextUpdate = new DERGeneralizedTime(nextUpdate);
            }
            else
            {
                this.nextUpdate = null;
            }

            this.extensions = extensions;
        }

        public SingleResponse toResponse()
            throws Exception
        {
            return new SingleResponse(certId.toASN1Object(), certStatus, thisUpdate, nextUpdate, extensions);
        }
    }

    /**
     * basic constructor
     */
    public BasicOCSPRespBuilder(
        RespID  responderID)
    {
        this.responderID = responderID;
    }

    /**
     * construct with the responderID to be the SHA-1 keyHash of the passed in public key.
     *
     * @param key the key info of the responder public key.
     * @param digCalc  a SHA-1 digest calculator
     */
    public BasicOCSPRespBuilder(
        SubjectPublicKeyInfo key,
        DigestCalculator     digCalc)
        throws OCSPException
    {
        this.responderID = new RespID(key, digCalc);
    }

    /**
     * Add a response for a particular Certificate ID.
     * 
     * @param certID certificate ID details
     * @param certStatus status of the certificate - null if okay
     */
    public BasicOCSPRespBuilder addResponse(
        CertificateID       certID,
        CertificateStatus   certStatus)
    {
        list.add(new ResponseObject(certID, certStatus, new Date(), null, null));

        return this;
    }

    /**
     * Add a response for a particular Certificate ID.
     * 
     * @param certID certificate ID details
     * @param certStatus status of the certificate - null if okay
     * @param singleExtensions optional extensions
     */
    public BasicOCSPRespBuilder addResponse(
        CertificateID       certID,
        CertificateStatus   certStatus,
        Extensions      singleExtensions)
    {
        list.add(new ResponseObject(certID, certStatus, new Date(), null, singleExtensions));

        return this;
    }
    
    /**
     * Add a response for a particular Certificate ID.
     * 
     * @param certID certificate ID details
     * @param nextUpdate date when next update should be requested
     * @param certStatus status of the certificate - null if okay
     * @param singleExtensions optional extensions
     */
    public BasicOCSPRespBuilder addResponse(
        CertificateID       certID,
        CertificateStatus   certStatus,
        Date                nextUpdate,
        Extensions      singleExtensions)
    {
        list.add(new ResponseObject(certID, certStatus, new Date(), nextUpdate, singleExtensions));

        return this;
    }
    
    /**
     * Add a response for a particular Certificate ID.
     * 
     * @param certID certificate ID details
     * @param thisUpdate date this response was valid on
     * @param nextUpdate date when next update should be requested
     * @param certStatus status of the certificate - null if okay
     * @param singleExtensions optional extensions
     */
    public BasicOCSPRespBuilder addResponse(
        CertificateID       certID,
        CertificateStatus   certStatus,
        Date                thisUpdate,
        Date                nextUpdate,
        Extensions      singleExtensions)
    {
        list.add(new ResponseObject(certID, certStatus, thisUpdate, nextUpdate, singleExtensions));

        return this;
    }
    
    /**
     * Set the extensions for the response.
     * 
     * @param responseExtensions the extension object to carry.
     */
    public BasicOCSPRespBuilder setResponseExtensions(
        Extensions  responseExtensions)
    {
        this.responseExtensions = responseExtensions;

        return this;
    }

    public BasicOCSPResp build(
        ContentSigner signer,
        X509CertificateHolder[]   chain,
        Date                producedAt)
        throws OCSPException
    {
        Iterator    it = list.iterator();

        ASN1EncodableVector responses = new ASN1EncodableVector();

        while (it.hasNext())
        {
            try
            {
                responses.add(((ResponseObject)it.next()).toResponse());
            }
            catch (Exception e)
            {
                throw new OCSPException("exception creating Request", e);
            }
        }

        ResponseData  tbsResp = new ResponseData(responderID.toASN1Object(), new ASN1GeneralizedTime(producedAt), new DERSequence(responses), responseExtensions);
        DERBitString    bitSig;

        try
        {
            OutputStream sigOut = signer.getOutputStream();

            sigOut.write(tbsResp.getEncoded(ASN1Encoding.DER));
            sigOut.close();

            bitSig = new DERBitString(signer.getSignature());
        }
        catch (Exception e)
        {
            throw new OCSPException("exception processing TBSRequest: " + e.getMessage(), e);
        }

        AlgorithmIdentifier sigAlgId = signer.getAlgorithmIdentifier();

        DERSequence chainSeq = null;
        if (chain != null && chain.length > 0)
        {
            ASN1EncodableVector v = new ASN1EncodableVector();

            for (int i = 0; i != chain.length; i++)
            {
                v.add(chain[i].toASN1Structure());
            }

            chainSeq = new DERSequence(v);
        }

        return new BasicOCSPResp(new BasicOCSPResponse(tbsResp, sigAlgId, bitSig, chainSeq));
    }
}