init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Asn1/Esf/SignaturePolicyIdentifier.cs

@@ -0,0 +1,51 @@
+using System;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.Esf;
+
+public class SignaturePolicyIdentifier : Asn1Encodable, IAsn1Choice
+{
+	private readonly SignaturePolicyId sigPolicy;
+
+	public SignaturePolicyId SignaturePolicyId => sigPolicy;
+
+	public static SignaturePolicyIdentifier GetInstance(object obj)
+	{
+		if (obj == null || obj is SignaturePolicyIdentifier)
+		{
+			return (SignaturePolicyIdentifier)obj;
+		}
+		if (obj is SignaturePolicyId)
+		{
+			return new SignaturePolicyIdentifier((SignaturePolicyId)obj);
+		}
+		if (obj is Asn1Null)
+		{
+			return new SignaturePolicyIdentifier();
+		}
+		throw new ArgumentException("Unknown object in 'SignaturePolicyIdentifier' factory: " + Platform.GetTypeName(obj), "obj");
+	}
+
+	public SignaturePolicyIdentifier()
+	{
+		sigPolicy = null;
+	}
+
+	public SignaturePolicyIdentifier(SignaturePolicyId signaturePolicyId)
+	{
+		if (signaturePolicyId == null)
+		{
+			throw new ArgumentNullException("signaturePolicyId");
+		}
+		sigPolicy = signaturePolicyId;
+	}
+
+	public override Asn1Object ToAsn1Object()
+	{
+		if (sigPolicy != null)
+		{
+			return sigPolicy.ToAsn1Object();
+		}
+		return DerNull.Instance;
+	}
+}