using System; namespace Org.BouncyCastle.Asn1.X509 { public class V2Form : Asn1Encodable { internal GeneralNames issuerName; internal IssuerSerial baseCertificateID; internal ObjectDigestInfo objectDigestInfo; public static V2Form GetInstance( Asn1TaggedObject obj, bool explicitly) { return GetInstance(Asn1Sequence.GetInstance(obj, explicitly)); } public static V2Form GetInstance(object obj) { if (obj is V2Form) return (V2Form)obj; if (obj != null) return new V2Form(Asn1Sequence.GetInstance(obj)); return null; } public V2Form(GeneralNames issuerName) : this(issuerName, null, null) { } public V2Form(GeneralNames issuerName, IssuerSerial baseCertificateID) : this(issuerName, baseCertificateID, null) { } public V2Form(GeneralNames issuerName, ObjectDigestInfo objectDigestInfo) : this(issuerName, null, objectDigestInfo) { } public V2Form( GeneralNames issuerName, IssuerSerial baseCertificateID, ObjectDigestInfo objectDigestInfo) { this.issuerName = issuerName; this.baseCertificateID = baseCertificateID; this.objectDigestInfo = objectDigestInfo; } private V2Form( Asn1Sequence seq) { if (seq.Count > 3) { throw new ArgumentException("Bad sequence size: " + seq.Count); } int index = 0; if (!(seq[0] is Asn1TaggedObject)) { index++; this.issuerName = GeneralNames.GetInstance(seq[0]); } for (int i = index; i != seq.Count; i++) { Asn1TaggedObject o = Asn1TaggedObject.GetInstance(seq[i]); if (o.TagNo == 0) { baseCertificateID = IssuerSerial.GetInstance(o, false); } else if (o.TagNo == 1) { objectDigestInfo = ObjectDigestInfo.GetInstance(o, false); } else { throw new ArgumentException("Bad tag number: " + o.TagNo); } } } public GeneralNames IssuerName { get { return issuerName; } } public IssuerSerial BaseCertificateID { get { return baseCertificateID; } } public ObjectDigestInfo ObjectDigestInfo { get { return objectDigestInfo; } } /** * Produce an object suitable for an Asn1OutputStream. *
         *  V2Form ::= Sequence {
         *       issuerName            GeneralNames  OPTIONAL,
         *       baseCertificateID     [0] IssuerSerial  OPTIONAL,
         *       objectDigestInfo      [1] ObjectDigestInfo  OPTIONAL
         *         -- issuerName MUST be present in this profile
         *         -- baseCertificateID and objectDigestInfo MUST NOT
         *         -- be present in this profile
         *  }
         * 
*/ public override Asn1Object ToAsn1Object() { Asn1EncodableVector v = new Asn1EncodableVector(); v.AddOptional(issuerName); v.AddOptionalTagged(false, 0, baseCertificateID); v.AddOptionalTagged(false, 1, objectDigestInfo); return new DerSequence(v); } } }