init commit

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

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+using System;
+using Org.BouncyCastle.Asn1.X509;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.Cms;
+
+public class EncryptedContentInfo : Asn1Encodable
+{
+	private DerObjectIdentifier contentType;
+
+	private AlgorithmIdentifier contentEncryptionAlgorithm;
+
+	private Asn1OctetString encryptedContent;
+
+	public DerObjectIdentifier ContentType => contentType;
+
+	public AlgorithmIdentifier ContentEncryptionAlgorithm => contentEncryptionAlgorithm;
+
+	public Asn1OctetString EncryptedContent => encryptedContent;
+
+	public EncryptedContentInfo(DerObjectIdentifier contentType, AlgorithmIdentifier contentEncryptionAlgorithm, Asn1OctetString encryptedContent)
+	{
+		this.contentType = contentType;
+		this.contentEncryptionAlgorithm = contentEncryptionAlgorithm;
+		this.encryptedContent = encryptedContent;
+	}
+
+	public EncryptedContentInfo(Asn1Sequence seq)
+	{
+		contentType = (DerObjectIdentifier)seq[0];
+		contentEncryptionAlgorithm = AlgorithmIdentifier.GetInstance(seq[1]);
+		if (seq.Count > 2)
+		{
+			encryptedContent = Asn1OctetString.GetInstance((Asn1TaggedObject)seq[2], isExplicit: false);
+		}
+	}
+
+	public static EncryptedContentInfo GetInstance(object obj)
+	{
+		if (obj == null || obj is EncryptedContentInfo)
+		{
+			return (EncryptedContentInfo)obj;
+		}
+		if (obj is Asn1Sequence)
+		{
+			return new EncryptedContentInfo((Asn1Sequence)obj);
+		}
+		throw new ArgumentException("Invalid EncryptedContentInfo: " + Platform.GetTypeName(obj));
+	}
+
+	public override Asn1Object ToAsn1Object()
+	{
+		Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(contentType, contentEncryptionAlgorithm);
+		if (encryptedContent != null)
+		{
+			asn1EncodableVector.Add(new BerTaggedObject(explicitly: false, 0, encryptedContent));
+		}
+		return new BerSequence(asn1EncodableVector);
+	}
+}