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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.cert.ocsp;

import java.util.Date;
import java.util.List;
import java.util.Set;

import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ocsp.CertStatus;
import org.bouncycastle.asn1.ocsp.RevokedInfo;
import org.bouncycastle.asn1.ocsp.SingleResponse;
import org.bouncycastle.asn1.x509.Extension;
import org.bouncycastle.asn1.x509.Extensions;

public class SingleResp
{
    private SingleResponse  resp;
    private Extensions extensions;

    public SingleResp(
        SingleResponse  resp)
    {
        this.resp = resp;
        this.extensions = resp.getSingleExtensions();
    }

    public CertificateID getCertID()
    {
        return new CertificateID(resp.getCertID());
    }

    /**
     * Return the status object for the response - null indicates good.
     * 
     * @return the status object for the response, null if it is good.
     */
    public CertificateStatus getCertStatus()
    {
        CertStatus  s = resp.getCertStatus();

        if (s.getTagNo() == 0)
        {
            return null;            // good
        }
        else if (s.getTagNo() == 1)
        {
            return new RevokedStatus(RevokedInfo.getInstance(s.getStatus()));
        }

        return new UnknownStatus();
    }

    public Date getThisUpdate()
    {
        return OCSPUtils.extractDate(resp.getThisUpdate());
    }

    /**
     * return the NextUpdate value - note: this is an optional field so may
     * be returned as null.
     *
     * @return nextUpdate, or null if not present.
     */
    public Date getNextUpdate()
    {
        if (resp.getNextUpdate() == null)
        {
            return null;
        }

        return OCSPUtils.extractDate(resp.getNextUpdate());
    }

    public boolean hasExtensions()
    {
        return extensions != null;
    }

    public Extension getExtension(ASN1ObjectIdentifier oid)
    {
        if (extensions != null)
        {
            return extensions.getExtension(oid);
        }

        return null;
    }

    public List getExtensionOIDs()
    {
        return OCSPUtils.getExtensionOIDs(extensions);
    }

    public Set getCriticalExtensionOIDs()
    {
        return OCSPUtils.getCriticalExtensionOIDs(extensions);
    }

    public Set getNonCriticalExtensionOIDs()
    {
        return OCSPUtils.getNonCriticalExtensionOIDs(extensions);
    }
}