RecipientInfo
using Org.BouncyCastle.Utilities;
using System;
namespace Org.BouncyCastle.Asn1.Cms
{
public class RecipientInfo : Asn1Encodable, IAsn1Choice
{
internal Asn1Encodable info;
public DerInteger Version {
get {
Asn1TaggedObject asn1TaggedObject = info as Asn1TaggedObject;
if (asn1TaggedObject != null) {
switch (asn1TaggedObject.TagNo) {
case 1:
return KeyAgreeRecipientInfo.GetInstance(asn1TaggedObject, false).Version;
case 2:
return GetKekInfo(asn1TaggedObject).Version;
case 3:
return PasswordRecipientInfo.GetInstance(asn1TaggedObject, false).Version;
case 4:
return new DerInteger(0);
default:
throw new InvalidOperationException("unknown tag");
}
}
return KeyTransRecipientInfo.GetInstance(info).Version;
}
}
public bool IsTagged => info is Asn1TaggedObject;
public Asn1Encodable Info {
get {
Asn1TaggedObject asn1TaggedObject = info as Asn1TaggedObject;
if (asn1TaggedObject != null) {
switch (asn1TaggedObject.TagNo) {
case 1:
return KeyAgreeRecipientInfo.GetInstance(asn1TaggedObject, false);
case 2:
return GetKekInfo(asn1TaggedObject);
case 3:
return PasswordRecipientInfo.GetInstance(asn1TaggedObject, false);
case 4:
return OtherRecipientInfo.GetInstance(asn1TaggedObject, false);
default:
throw new InvalidOperationException("unknown tag");
}
}
return KeyTransRecipientInfo.GetInstance(info);
}
}
public static RecipientInfo GetInstance(object o)
{
if (o == null)
return null;
RecipientInfo recipientInfo = o as RecipientInfo;
if (recipientInfo != null)
return recipientInfo;
Asn1Sequence asn1Sequence = o as Asn1Sequence;
if (asn1Sequence != null)
return new RecipientInfo(asn1Sequence);
Asn1TaggedObject asn1TaggedObject = o as Asn1TaggedObject;
if (asn1TaggedObject != null)
return new RecipientInfo(asn1TaggedObject);
throw new ArgumentException("unknown object in factory: " + Platform.GetTypeName(o), "o");
}
public static RecipientInfo GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
return Asn1Utilities.GetInstanceFromChoice(taggedObject, declaredExplicit, GetInstance);
}
public RecipientInfo(KeyTransRecipientInfo info)
{
this.info = info;
}
public RecipientInfo(KeyAgreeRecipientInfo info)
{
this.info = new DerTaggedObject(false, 1, info);
}
public RecipientInfo(KekRecipientInfo info)
{
this.info = new DerTaggedObject(false, 2, info);
}
public RecipientInfo(PasswordRecipientInfo info)
{
this.info = new DerTaggedObject(false, 3, info);
}
public RecipientInfo(OtherRecipientInfo info)
{
this.info = new DerTaggedObject(false, 4, info);
}
public RecipientInfo(Asn1Object info)
{
this.info = info;
}
private KekRecipientInfo GetKekInfo(Asn1TaggedObject o)
{
return KekRecipientInfo.GetInstance(o, o.IsExplicit());
}
public override Asn1Object ToAsn1Object()
{
return info.ToAsn1Object();
}
}
}