init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Asn1/Cms/RecipientIdentifier.cs

@@ -0,0 +1,64 @@
+using System;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.Cms;
+
+public class RecipientIdentifier : Asn1Encodable, IAsn1Choice
+{
+	private Asn1Encodable id;
+
+	public bool IsTagged => id is Asn1TaggedObject;
+
+	public Asn1Encodable ID
+	{
+		get
+		{
+			if (id is Asn1TaggedObject)
+			{
+				return Asn1OctetString.GetInstance((Asn1TaggedObject)id, isExplicit: false);
+			}
+			return IssuerAndSerialNumber.GetInstance(id);
+		}
+	}
+
+	public RecipientIdentifier(IssuerAndSerialNumber id)
+	{
+		this.id = id;
+	}
+
+	public RecipientIdentifier(Asn1OctetString id)
+	{
+		this.id = new DerTaggedObject(explicitly: false, 0, id);
+	}
+
+	public RecipientIdentifier(Asn1Object id)
+	{
+		this.id = id;
+	}
+
+	public static RecipientIdentifier GetInstance(object o)
+	{
+		if (o == null || o is RecipientIdentifier)
+		{
+			return (RecipientIdentifier)o;
+		}
+		if (o is IssuerAndSerialNumber)
+		{
+			return new RecipientIdentifier((IssuerAndSerialNumber)o);
+		}
+		if (o is Asn1OctetString)
+		{
+			return new RecipientIdentifier((Asn1OctetString)o);
+		}
+		if (o is Asn1Object)
+		{
+			return new RecipientIdentifier((Asn1Object)o);
+		}
+		throw new ArgumentException("Illegal object in RecipientIdentifier: " + Platform.GetTypeName(o));
+	}
+
+	public override Asn1Object ToAsn1Object()
+	{
+		return id.ToAsn1Object();
+	}
+}