init commit

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

@@ -0,0 +1,108 @@
+using System;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.Cms;
+
+public class RecipientInfo : Asn1Encodable, IAsn1Choice
+{
+	internal Asn1Encodable info;
+
+	public DerInteger Version
+	{
+		get
+		{
+			if (info is Asn1TaggedObject)
+			{
+				Asn1TaggedObject asn1TaggedObject = (Asn1TaggedObject)info;
+				return asn1TaggedObject.TagNo switch
+				{
+					1 => KeyAgreeRecipientInfo.GetInstance(asn1TaggedObject, explicitly: false).Version, 
+					2 => GetKekInfo(asn1TaggedObject).Version, 
+					3 => PasswordRecipientInfo.GetInstance(asn1TaggedObject, explicitly: false).Version, 
+					4 => new DerInteger(0), 
+					_ => throw new InvalidOperationException("unknown tag"), 
+				};
+			}
+			return KeyTransRecipientInfo.GetInstance(info).Version;
+		}
+	}
+
+	public bool IsTagged => info is Asn1TaggedObject;
+
+	public Asn1Encodable Info
+	{
+		get
+		{
+			if (info is Asn1TaggedObject)
+			{
+				Asn1TaggedObject asn1TaggedObject = (Asn1TaggedObject)info;
+				return asn1TaggedObject.TagNo switch
+				{
+					1 => KeyAgreeRecipientInfo.GetInstance(asn1TaggedObject, explicitly: false), 
+					2 => GetKekInfo(asn1TaggedObject), 
+					3 => PasswordRecipientInfo.GetInstance(asn1TaggedObject, explicitly: false), 
+					4 => OtherRecipientInfo.GetInstance(asn1TaggedObject, explicitly: false), 
+					_ => throw new InvalidOperationException("unknown tag"), 
+				};
+			}
+			return KeyTransRecipientInfo.GetInstance(info);
+		}
+	}
+
+	public RecipientInfo(KeyTransRecipientInfo info)
+	{
+		this.info = info;
+	}
+
+	public RecipientInfo(KeyAgreeRecipientInfo info)
+	{
+		this.info = new DerTaggedObject(explicitly: false, 1, info);
+	}
+
+	public RecipientInfo(KekRecipientInfo info)
+	{
+		this.info = new DerTaggedObject(explicitly: false, 2, info);
+	}
+
+	public RecipientInfo(PasswordRecipientInfo info)
+	{
+		this.info = new DerTaggedObject(explicitly: false, 3, info);
+	}
+
+	public RecipientInfo(OtherRecipientInfo info)
+	{
+		this.info = new DerTaggedObject(explicitly: false, 4, info);
+	}
+
+	public RecipientInfo(Asn1Object info)
+	{
+		this.info = info;
+	}
+
+	public static RecipientInfo GetInstance(object o)
+	{
+		if (o == null || o is RecipientInfo)
+		{
+			return (RecipientInfo)o;
+		}
+		if (o is Asn1Sequence)
+		{
+			return new RecipientInfo((Asn1Sequence)o);
+		}
+		if (o is Asn1TaggedObject)
+		{
+			return new RecipientInfo((Asn1TaggedObject)o);
+		}
+		throw new ArgumentException("unknown object in factory: " + Platform.GetTypeName(o));
+	}
+
+	private KekRecipientInfo GetKekInfo(Asn1TaggedObject o)
+	{
+		return KekRecipientInfo.GetInstance(o, o.IsExplicit());
+	}
+
+	public override Asn1Object ToAsn1Object()
+	{
+		return info.ToAsn1Object();
+	}
+}