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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, S/MIME 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 and used appropriately.

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package org.bouncycastle.its;

import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.oer.its.ieee1609dot2.basetypes.CrlSeries;

import org.bouncycastle.oer.its.ieee1609dot2.basetypes.HashedId3;
import org.bouncycastle.oer.its.ieee1609dot2.PsidGroupPermissions;
import org.bouncycastle.oer.its.ieee1609dot2.basetypes.PsidSsp;
import org.bouncycastle.oer.its.ieee1609dot2.SequenceOfPsidGroupPermissions;
import org.bouncycastle.oer.its.ieee1609dot2.basetypes.SequenceOfPsidSsp;
import org.bouncycastle.oer.its.ieee1609dot2.ToBeSignedCertificate;
import org.bouncycastle.oer.its.ieee1609dot2.basetypes.UINT8;

public class ITSCertificateBuilder
{
    protected final ToBeSignedCertificate.Builder tbsCertificateBuilder;
    protected final ITSCertificate issuer;

    protected UINT8 version = new UINT8(3);
    //  ETSI TS 103 097 V1.4.1 (2020-10) default/constraint - Section 6.
    protected HashedId3 cracaId = new HashedId3(new byte[3]);
    //  ETSI TS 103 097 V1.4.1 (2020-10) default/constraint - Section 6.
    protected CrlSeries crlSeries = new CrlSeries(0);

    // TODO: temp constructor to get signing working - self signed
    public ITSCertificateBuilder(ToBeSignedCertificate.Builder tbsCertificateBuilder)
    {
        this(null, tbsCertificateBuilder);
    }

    // TODO: temp constructor to get signing working - non self signed
    public ITSCertificateBuilder(ITSCertificate issuer, ToBeSignedCertificate.Builder tbsCertificateBuilder)
    {
        this.issuer = issuer;
        this.tbsCertificateBuilder = tbsCertificateBuilder;
        this.tbsCertificateBuilder.setCracaId(cracaId);
        this.tbsCertificateBuilder.setCrlSeries(crlSeries);
    }

    public ITSCertificate getIssuer()
    {
        return issuer;
    }

    /**
     * set the version - default value is 3.
     *
     * @param version certificate version.
     * @return the current builder.
     */
    public ITSCertificateBuilder setVersion(int version)
    {
        this.version = new UINT8(version);
        return this;
    }

    /**
     * Set the cracaId. The default value for the field is 000000'H in line with ETSI TS 103 097 V1.4.1 (2020-10) default/constraint - Section 6.
     *
     * @param cracaId hashedId for the craca, the ID of the CRL manager.
     * @return the current builder.
     */
    public ITSCertificateBuilder setCracaId(byte[] cracaId)
    {
        this.cracaId = new HashedId3(cracaId);
        this.tbsCertificateBuilder.setCracaId(this.cracaId);

        return this;
    }

    /**
     * Set the crlSeries. The default value for the field is 0'D in line with ETSI TS 103 097 V1.4.1 (2020-10) default/constraint - Section 6.
     *
     * @param crlSeries id for the CRL series for revocation.
     * @return the current builder.
     */
    public ITSCertificateBuilder setCrlSeries(int crlSeries)
    {
        this.crlSeries = new CrlSeries(crlSeries);
        this.tbsCertificateBuilder.setCrlSeries(this.crlSeries);

        return this;
    }

    public ITSCertificateBuilder setValidityPeriod(ITSValidityPeriod validityPeriod)
    {
        tbsCertificateBuilder.setValidityPeriod(validityPeriod.toASN1Structure());

        return this;
    }
    
    public ITSCertificateBuilder setCertIssuePermissions(PsidGroupPermissions... permissions)
    {
        tbsCertificateBuilder.setCertIssuePermissions(
            SequenceOfPsidGroupPermissions.builder().addGroupPermission(permissions).createSequenceOfPsidGroupPermissions());

        return this;
    }

    public ITSCertificateBuilder setAppPermissions(PsidSsp... psidSsps)
    {
        SequenceOfPsidSsp.Builder bldr = SequenceOfPsidSsp.builder();

        for (int i = 0; i != psidSsps.length; i++)
        {
            bldr.setItem(psidSsps[i]);
        }

        tbsCertificateBuilder.setAppPermissions(bldr.createSequenceOfPsidSsp());

        return this;
    }
}