init commit

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

@@ -0,0 +1,76 @@
+using System;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.Cms;
+
+public class EncryptedData : Asn1Encodable
+{
+	private readonly DerInteger version;
+
+	private readonly EncryptedContentInfo encryptedContentInfo;
+
+	private readonly Asn1Set unprotectedAttrs;
+
+	public virtual DerInteger Version => version;
+
+	public virtual EncryptedContentInfo EncryptedContentInfo => encryptedContentInfo;
+
+	public virtual Asn1Set UnprotectedAttrs => unprotectedAttrs;
+
+	public static EncryptedData GetInstance(object obj)
+	{
+		if (obj is EncryptedData)
+		{
+			return (EncryptedData)obj;
+		}
+		if (obj is Asn1Sequence)
+		{
+			return new EncryptedData((Asn1Sequence)obj);
+		}
+		throw new ArgumentException("Invalid EncryptedData: " + Platform.GetTypeName(obj));
+	}
+
+	public EncryptedData(EncryptedContentInfo encInfo)
+		: this(encInfo, null)
+	{
+	}
+
+	public EncryptedData(EncryptedContentInfo encInfo, Asn1Set unprotectedAttrs)
+	{
+		if (encInfo == null)
+		{
+			throw new ArgumentNullException("encInfo");
+		}
+		version = new DerInteger((unprotectedAttrs != null) ? 2 : 0);
+		encryptedContentInfo = encInfo;
+		this.unprotectedAttrs = unprotectedAttrs;
+	}
+
+	private EncryptedData(Asn1Sequence seq)
+	{
+		if (seq == null)
+		{
+			throw new ArgumentNullException("seq");
+		}
+		if (seq.Count < 2 || seq.Count > 3)
+		{
+			throw new ArgumentException("Bad sequence size: " + seq.Count, "seq");
+		}
+		version = DerInteger.GetInstance(seq[0]);
+		encryptedContentInfo = EncryptedContentInfo.GetInstance(seq[1]);
+		if (seq.Count > 2)
+		{
+			unprotectedAttrs = Asn1Set.GetInstance((Asn1TaggedObject)seq[2], explicitly: false);
+		}
+	}
+
+	public override Asn1Object ToAsn1Object()
+	{
+		Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(version, encryptedContentInfo);
+		if (unprotectedAttrs != null)
+		{
+			asn1EncodableVector.Add(new BerTaggedObject(explicitly: false, 1, unprotectedAttrs));
+		}
+		return new BerSequence(asn1EncodableVector);
+	}
+}