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The Bouncy Castle Java APIs for ASN.1 extension and utility APIs used to support bcpkix and bctls 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.oer.its.etsi103097.extension;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERSequence;

/**
 * Extension {EXT-TYPE : ExtensionTypes} ::= SEQUENCE {
 * id      EXT-TYPE.&extId({ExtensionTypes}),
 * content EXT-TYPE.&ExtContent({ExtensionTypes}{@.id})
 * }
 * 
 * Where:
 * EtsiTs103097HeaderInfoExtensionId ::= ExtId
 * etsiTs102941CrlRequestId      EtsiTs103097HeaderInfoExtensionId ::= 1 --'01'H
 * etsiTs102941DeltaCtlRequestId EtsiTs103097HeaderInfoExtensionId ::= 2 --'02'H
 * 
 * EtsiTs103097HeaderInfoExtensions EXT-TYPE ::= {
 * { EtsiTs102941CrlRequest       IDENTIFIED BY etsiTs102941CrlRequestId } |
 * { EtsiTs102941DeltaCtlRequest  IDENTIFIED BY etsiTs102941DeltaCtlRequestId },
 * ...
 * }
 */
public class Extension
    extends ASN1Object
{

    /**
     * etsiTs102941CrlRequestId EtsiTs103097HeaderInfoExtensionId ::= 1
     */
    public static final ExtId etsiTs102941CrlRequestId = new ExtId(1);

    /**
     * etsiTs102941DeltaCtlRequestId EtsiTs103097HeaderInfoExtensionId ::= 2
     */
    public static final ExtId etsiTs102941DeltaCtlRequestId = new ExtId(2);

    private final ExtId id;
    private final ASN1Encodable content;

    protected Extension(ASN1Sequence sequence)
    {
        if (sequence.size() != 2)
        {
            throw new IllegalArgumentException("expected sequence size of 2");
        }
        id = ExtId.getInstance(sequence.getObjectAt(0));

        if (id.equals(etsiTs102941CrlRequestId))
        {
            content = EtsiTs102941CrlRequest.getInstance(sequence.getObjectAt(1));
        }
        else if (id.equals(etsiTs102941DeltaCtlRequestId))
        {
            content = EtsiTs102941DeltaCtlRequest.getInstance(sequence.getObjectAt(1));
        }
        else
        {
            throw new IllegalArgumentException("id not 1 (EtsiTs102941CrlRequest) or 2 (EtsiTs102941DeltaCtlRequest)");
        }
    }

    public Extension(ExtId id, ASN1Encodable content)
    {
        this.id = id;

        if (id.getExtId().intValue() != 1 && id.getExtId().intValue() != 2)
        {
            throw new IllegalArgumentException("id not 1 (EtsiTs102941CrlRequest) or 2 (EtsiTs102941DeltaCtlRequest)");
        }
        this.content = content;
    }

    public static Extension etsiTs102941CrlRequest(EtsiTs102941CrlRequest request)
    {
        return new Extension(etsiTs102941CrlRequestId, request);
    }

    public static Extension etsiTs102941DeltaCtlRequest(EtsiTs102941DeltaCtlRequest request)
    {
        return new Extension(etsiTs102941DeltaCtlRequestId, request);
    }

    public static Extension getInstance(Object o)
    {
        if (o instanceof Extension)
        {
            return (Extension)o;
        }

        if (o != null)
        {
            return new Extension(ASN1Sequence.getInstance(o));
        }

        return null;

    }

    @Override
    public ASN1Primitive toASN1Primitive()
    {
        return new DERSequence(new ASN1Encodable[]{id, content});
    }

    public ExtId getId()
    {
        return id;
    }

    public ASN1Encodable getContent()
    {
        return content;
    }

}