init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Asn1/Crmf/PopoSigningKey.cs

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+using System;
+using Org.BouncyCastle.Asn1.X509;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.Crmf;
+
+public class PopoSigningKey : Asn1Encodable
+{
+	private readonly PopoSigningKeyInput poposkInput;
+
+	private readonly AlgorithmIdentifier algorithmIdentifier;
+
+	private readonly DerBitString signature;
+
+	public virtual PopoSigningKeyInput PoposkInput => poposkInput;
+
+	public virtual AlgorithmIdentifier AlgorithmIdentifier => algorithmIdentifier;
+
+	public virtual DerBitString Signature => signature;
+
+	private PopoSigningKey(Asn1Sequence seq)
+	{
+		int index = 0;
+		if (seq[index] is Asn1TaggedObject)
+		{
+			Asn1TaggedObject asn1TaggedObject = (Asn1TaggedObject)seq[index++];
+			if (asn1TaggedObject.TagNo != 0)
+			{
+				throw new ArgumentException("Unknown PopoSigningKeyInput tag: " + asn1TaggedObject.TagNo, "seq");
+			}
+			poposkInput = PopoSigningKeyInput.GetInstance(asn1TaggedObject.GetObject());
+		}
+		algorithmIdentifier = AlgorithmIdentifier.GetInstance(seq[index++]);
+		signature = DerBitString.GetInstance(seq[index]);
+	}
+
+	public static PopoSigningKey GetInstance(object obj)
+	{
+		if (obj is PopoSigningKey)
+		{
+			return (PopoSigningKey)obj;
+		}
+		if (obj is Asn1Sequence)
+		{
+			return new PopoSigningKey((Asn1Sequence)obj);
+		}
+		throw new ArgumentException("Invalid object: " + Platform.GetTypeName(obj), "obj");
+	}
+
+	public static PopoSigningKey GetInstance(Asn1TaggedObject obj, bool isExplicit)
+	{
+		return GetInstance(Asn1Sequence.GetInstance(obj, isExplicit));
+	}
+
+	public PopoSigningKey(PopoSigningKeyInput poposkIn, AlgorithmIdentifier aid, DerBitString signature)
+	{
+		poposkInput = poposkIn;
+		algorithmIdentifier = aid;
+		this.signature = signature;
+	}
+
+	public override Asn1Object ToAsn1Object()
+	{
+		Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector();
+		if (poposkInput != null)
+		{
+			asn1EncodableVector.Add(new DerTaggedObject(explicitly: false, 0, poposkInput));
+		}
+		asn1EncodableVector.Add(algorithmIdentifier);
+		asn1EncodableVector.Add(signature);
+		return new DerSequence(asn1EncodableVector);
+	}
+}