init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Asn1/Cmp/Challenge.cs

@@ -0,0 +1,49 @@
+using System;
+using Org.BouncyCastle.Asn1.X509;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.Cmp;
+
+public class Challenge : Asn1Encodable
+{
+	private readonly AlgorithmIdentifier owf;
+
+	private readonly Asn1OctetString witness;
+
+	private readonly Asn1OctetString challenge;
+
+	public virtual AlgorithmIdentifier Owf => owf;
+
+	private Challenge(Asn1Sequence seq)
+	{
+		int index = 0;
+		if (seq.Count == 3)
+		{
+			owf = AlgorithmIdentifier.GetInstance(seq[index++]);
+		}
+		witness = Asn1OctetString.GetInstance(seq[index++]);
+		challenge = Asn1OctetString.GetInstance(seq[index]);
+	}
+
+	public static Challenge GetInstance(object obj)
+	{
+		if (obj is Challenge)
+		{
+			return (Challenge)obj;
+		}
+		if (obj is Asn1Sequence)
+		{
+			return new Challenge((Asn1Sequence)obj);
+		}
+		throw new ArgumentException("Invalid object: " + Platform.GetTypeName(obj), "obj");
+	}
+
+	public override Asn1Object ToAsn1Object()
+	{
+		Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector();
+		asn1EncodableVector.AddOptional(owf);
+		asn1EncodableVector.Add(witness);
+		asn1EncodableVector.Add(challenge);
+		return new DerSequence(asn1EncodableVector);
+	}
+}