using Org.BouncyCastle.Asn1.Tsp; 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) { return Asn1Utilities.GetInstanceChoice(obj, GetOptional); } public static Evidence GetInstance(Asn1TaggedObject obj, bool isExplicit) { return Asn1Utilities.GetInstanceChoice(obj, isExplicit, GetInstance); } public static Evidence GetOptional(Asn1Encodable element) { if (element == null) throw new ArgumentNullException("element"); Evidence evidence = element as Evidence; if (evidence != null) return evidence; Asn1TaggedObject optional = Asn1TaggedObject.GetOptional(element); if (optional != null) { if (optional.HasContextTag(0)) return new Evidence(TimeStampTokenEvidence.GetTagged(optional, false)); if (optional.HasContextTag(1)) return new Evidence(EvidenceRecord.GetTagged(optional, false)); if (optional.HasContextTag(2)) return new Evidence(Asn1Sequence.GetTagged(optional, false)); } return null; } 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(Asn1Sequence otherEvidence) { if (otherEvidence == null) throw new ArgumentNullException("otherEvidence"); m_otherEvidence = otherEvidence; } 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); } } }