init commit

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

@@ -0,0 +1,67 @@
+using System;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.Cms;
+
+public class ContentInfo : Asn1Encodable
+{
+	private readonly DerObjectIdentifier contentType;
+
+	private readonly Asn1Encodable content;
+
+	public DerObjectIdentifier ContentType => contentType;
+
+	public Asn1Encodable Content => content;
+
+	public static ContentInfo GetInstance(object obj)
+	{
+		if (obj == null || obj is ContentInfo)
+		{
+			return (ContentInfo)obj;
+		}
+		if (obj is Asn1Sequence)
+		{
+			return new ContentInfo((Asn1Sequence)obj);
+		}
+		throw new ArgumentException("unknown object in factory: " + Platform.GetTypeName(obj));
+	}
+
+	public static ContentInfo GetInstance(Asn1TaggedObject obj, bool isExplicit)
+	{
+		return GetInstance(Asn1Sequence.GetInstance(obj, isExplicit));
+	}
+
+	private ContentInfo(Asn1Sequence seq)
+	{
+		if (seq.Count < 1 || seq.Count > 2)
+		{
+			throw new ArgumentException("Bad sequence size: " + seq.Count, "seq");
+		}
+		contentType = (DerObjectIdentifier)seq[0];
+		if (seq.Count > 1)
+		{
+			Asn1TaggedObject asn1TaggedObject = (Asn1TaggedObject)seq[1];
+			if (!asn1TaggedObject.IsExplicit() || asn1TaggedObject.TagNo != 0)
+			{
+				throw new ArgumentException("Bad tag for 'content'", "seq");
+			}
+			content = asn1TaggedObject.GetObject();
+		}
+	}
+
+	public ContentInfo(DerObjectIdentifier contentType, Asn1Encodable content)
+	{
+		this.contentType = contentType;
+		this.content = content;
+	}
+
+	public override Asn1Object ToAsn1Object()
+	{
+		Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(contentType);
+		if (content != null)
+		{
+			asn1EncodableVector.Add(new BerTaggedObject(0, content));
+		}
+		return new BerSequence(asn1EncodableVector);
+	}
+}