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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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/******    DO NOT EDIT THIS CLASS bc-java SOURCE FILE     ******/
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package org.bouncycastle.asn1.cms;

import org.bouncycastle.asn1.ASN1Choice;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERTaggedObject;
import org.bouncycastle.asn1.x509.SubjectKeyIdentifier;

/**
 * RFC 5652:
 * Content encryption key delivery mechanisms.
 *  * OriginatorIdentifierOrKey ::= CHOICE {
 *     issuerAndSerialNumber IssuerAndSerialNumber,
 *     subjectKeyIdentifier [0] SubjectKeyIdentifier,
 *     originatorKey [1] OriginatorPublicKey 
 * }
 *
 * SubjectKeyIdentifier ::= OCTET STRING
 * 
 */
public class OriginatorIdentifierOrKey
    extends ASN1Object
    implements ASN1Choice
{
    private ASN1Encodable id;

    public OriginatorIdentifierOrKey(
        IssuerAndSerialNumber id)
    {
        this.id = id;
    }

    public OriginatorIdentifierOrKey(
        SubjectKeyIdentifier id)
    {
        this.id = new DERTaggedObject(false, 0, id);
    }

    public OriginatorIdentifierOrKey(
        OriginatorPublicKey id)
    {
        this.id = new DERTaggedObject(false, 1, id);
    }

    /**
     * Return an OriginatorIdentifierOrKey object from a tagged object.
     *
     * @param o the tagged object holding the object we want.
     * @param explicit true if the object is meant to be explicitly
     *              tagged false otherwise.
     * @exception IllegalArgumentException if the object held by the
     *          tagged object cannot be converted.
     */
    public static OriginatorIdentifierOrKey getInstance(
        ASN1TaggedObject    o,
        boolean             explicit)
    {
        if (!explicit)
        {
            throw new IllegalArgumentException(
                    "Can't implicitly tag OriginatorIdentifierOrKey");
        }

        return getInstance(o.getObject());
    }
    
    /**
     * Return an OriginatorIdentifierOrKey object from the given object.
     * 
     * Accepted inputs:
     * 

     *  null → null
     * 
 {@link OriginatorIdentifierOrKey} object
     * 
 {@link IssuerAndSerialNumber} object
     * 
 {@link org.bouncycastle.asn1.ASN1TaggedObject#getInstance(java.lang.Object) ASN1TaggedObject} input formats with IssuerAndSerialNumber structure inside
     * 
     *
     * @param o the object we want converted.
     * @exception IllegalArgumentException if the object cannot be converted.
     */
    public static OriginatorIdentifierOrKey getInstance(
        Object o)
    {
        if (o == null || o instanceof OriginatorIdentifierOrKey)
        {
            return (OriginatorIdentifierOrKey)o;
        }

        if (o instanceof IssuerAndSerialNumber || o instanceof ASN1Sequence)
        {
            return new OriginatorIdentifierOrKey(IssuerAndSerialNumber.getInstance(o));
        }

        if (o instanceof ASN1TaggedObject)
        {
            ASN1TaggedObject tagged = (ASN1TaggedObject)o;

            if (tagged.getTagNo() == 0)
            {
                return new OriginatorIdentifierOrKey(SubjectKeyIdentifier.getInstance(tagged, false));
            }
            else if (tagged.getTagNo() == 1)
            {
                return new OriginatorIdentifierOrKey(OriginatorPublicKey.getInstance(tagged, false));
            }
        }

        throw new IllegalArgumentException("Invalid OriginatorIdentifierOrKey: " + o.getClass().getName());
    }

    public ASN1Encodable getId()
    {
        return id;
    }

    public IssuerAndSerialNumber getIssuerAndSerialNumber()
    {
        if (id instanceof IssuerAndSerialNumber)
        {
            return (IssuerAndSerialNumber)id;
        }

        return null;
    }

    public SubjectKeyIdentifier getSubjectKeyIdentifier()
    {
        if (id instanceof ASN1TaggedObject && ((ASN1TaggedObject)id).getTagNo() == 0)
        {
            return SubjectKeyIdentifier.getInstance((ASN1TaggedObject)id, false);
        }

        return null;
    }

    public OriginatorPublicKey getOriginatorKey()
    {
        if (id instanceof ASN1TaggedObject && ((ASN1TaggedObject)id).getTagNo() == 1)
        {
            return OriginatorPublicKey.getInstance((ASN1TaggedObject)id, false);
        }

        return null;
    }

    /**
     * Produce an object suitable for an ASN1OutputStream.
     */
    public ASN1Primitive toASN1Primitive()
    {
        return id.toASN1Primitive();
    }
}