using Org.BouncyCastle.Asn1.Tsp; using Org.BouncyCastle.Utilities; using System; namespace Org.BouncyCastle.Asn1.Cms { public class Evidence : Asn1Encodable, IAsn1Choice { private readonly TimeStampTokenEvidence m_tstEvidence; private readonly EvidenceRecord m_ersEvidence; private readonly Asn1Sequence m_otherEvidence; public virtual TimeStampTokenEvidence TstEvidence => m_tstEvidence; public virtual EvidenceRecord ErsEvidence => m_ersEvidence; public static Evidence GetInstance(object obj) { if (obj == null) return null; Evidence evidence = obj as Evidence; if (evidence != null) return evidence; Asn1TaggedObject asn1TaggedObject = obj as Asn1TaggedObject; if (asn1TaggedObject != null) return new Evidence(Asn1Utilities.CheckContextTagClass(asn1TaggedObject)); throw new ArgumentException("Unknown object in GetInstance: " + Platform.GetTypeName(obj), "obj"); } public static Evidence GetInstance(Asn1TaggedObject obj, bool isExplicit) { return Asn1Utilities.GetInstanceChoice(obj, isExplicit, GetInstance); } public static Evidence GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit) { return Asn1Utilities.GetTaggedChoice(taggedObject, declaredExplicit, GetInstance); } public Evidence(TimeStampTokenEvidence tstEvidence) { if (tstEvidence == null) throw new ArgumentNullException("tstEvidence"); m_tstEvidence = tstEvidence; } public Evidence(EvidenceRecord ersEvidence) { if (ersEvidence == null) throw new ArgumentNullException("ersEvidence"); m_ersEvidence = ersEvidence; } private Evidence(Asn1TaggedObject tagged) { if (tagged.TagNo == 0) m_tstEvidence = TimeStampTokenEvidence.GetInstance(tagged, false); else if (tagged.TagNo == 1) { m_ersEvidence = EvidenceRecord.GetInstance(tagged, false); } else { if (tagged.TagNo != 2) throw new ArgumentException("unknown tag in Evidence", "tagged"); m_otherEvidence = Asn1Sequence.GetInstance(tagged, false); } } public override Asn1Object ToAsn1Object() { if (m_tstEvidence != null) return new DerTaggedObject(false, 0, m_tstEvidence); if (m_ersEvidence != null) return new DerTaggedObject(false, 1, m_ersEvidence); return new DerTaggedObject(false, 2, m_otherEvidence); } } }