using System; using Org.BouncyCastle.Asn1.X509; using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.Asn1.Cms { public class OriginatorIdentifierOrKey : Asn1Encodable, IAsn1Choice { private readonly 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); } private OriginatorIdentifierOrKey(Asn1TaggedObject id) { // TODO Add validation this.id = id; } /** * return an OriginatorIdentifierOrKey object from a tagged object. * * @param o the tagged object holding the object we want. * @param explicitly true if the object is meant to be explicitly * tagged false otherwise. * @exception ArgumentException if the object held by the * tagged object cannot be converted. */ public static OriginatorIdentifierOrKey GetInstance( Asn1TaggedObject o, bool explicitly) { if (!explicitly) { throw new ArgumentException( "Can't implicitly tag OriginatorIdentifierOrKey"); } return GetInstance(o.GetObject()); } /** * return an OriginatorIdentifierOrKey object from the given object. * * @param o the object we want converted. * @exception ArgumentException if the object cannot be converted. */ public static OriginatorIdentifierOrKey GetInstance( object o) { if (o == null || o is OriginatorIdentifierOrKey) return (OriginatorIdentifierOrKey)o; if (o is IssuerAndSerialNumber) return new OriginatorIdentifierOrKey((IssuerAndSerialNumber)o); if (o is SubjectKeyIdentifier) return new OriginatorIdentifierOrKey((SubjectKeyIdentifier)o); if (o is OriginatorPublicKey) return new OriginatorIdentifierOrKey((OriginatorPublicKey)o); if (o is Asn1TaggedObject) return new OriginatorIdentifierOrKey((Asn1TaggedObject)o); throw new ArgumentException("Invalid OriginatorIdentifierOrKey: " + Platform.GetTypeName(o)); } public Asn1Encodable ID { get { return id; } } public IssuerAndSerialNumber IssuerAndSerialNumber { get { if (id is IssuerAndSerialNumber) { return (IssuerAndSerialNumber)id; } return null; } } public SubjectKeyIdentifier SubjectKeyIdentifier { get { if (id is Asn1TaggedObject && ((Asn1TaggedObject)id).TagNo == 0) { return SubjectKeyIdentifier.GetInstance((Asn1TaggedObject)id, false); } return null; } } public OriginatorPublicKey OriginatorPublicKey { get { if (id is Asn1TaggedObject && ((Asn1TaggedObject)id).TagNo == 1) { return OriginatorPublicKey.GetInstance((Asn1TaggedObject)id, false); } return null; } } /** * Produce an object suitable for an Asn1OutputStream. *
         * OriginatorIdentifierOrKey ::= CHOICE {
         *     issuerAndSerialNumber IssuerAndSerialNumber,
         *     subjectKeyIdentifier [0] SubjectKeyIdentifier,
         *     originatorKey [1] OriginatorPublicKey
         * }
         *
         * SubjectKeyIdentifier ::= OCTET STRING
         * 
*/ public override Asn1Object ToAsn1Object() { return id.ToAsn1Object(); } } }