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using System;
using Org.BouncyCastle.Asn1.Tsp;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1.Cms
{
public class Evidence
: Asn1Encodable, IAsn1Choice
{
public static Evidence GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is Evidence evidence)
return evidence;
if (obj is Asn1TaggedObject taggedObject)
return new Evidence(Asn1Utilities.CheckContextTagClass(taggedObject));
throw new ArgumentException("Unknown object in GetInstance: " + Platform.GetTypeName(obj), nameof(obj));
}
public static Evidence GetInstance(Asn1TaggedObject obj, bool isExplicit)
{
return Asn1Utilities.GetInstanceFromChoice(obj, isExplicit, GetInstance);
}
private readonly TimeStampTokenEvidence m_tstEvidence;
private readonly EvidenceRecord m_ersEvidence;
private readonly Asn1Sequence m_otherEvidence;
public Evidence(TimeStampTokenEvidence tstEvidence)
{
m_tstEvidence = tstEvidence;
}
public Evidence(EvidenceRecord 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)
{
m_otherEvidence = Asn1Sequence.GetInstance(tagged, false);
}
else
{
throw new ArgumentException("unknown tag in Evidence", nameof(tagged));
}
}
public virtual TimeStampTokenEvidence TstEvidence => m_tstEvidence;
public virtual EvidenceRecord ErsEvidence => m_ersEvidence;
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);
}
}
}
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