init commit

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

@@ -0,0 +1,58 @@
+using System;
+using Org.BouncyCastle.Asn1.X509;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.Cmp;
+
+public class CmpCertificate : Asn1Encodable, IAsn1Choice
+{
+	private readonly X509CertificateStructure x509v3PKCert;
+
+	private readonly AttributeCertificate x509v2AttrCert;
+
+	public virtual bool IsX509v3PKCert => x509v3PKCert != null;
+
+	public virtual X509CertificateStructure X509v3PKCert => x509v3PKCert;
+
+	public virtual AttributeCertificate X509v2AttrCert => x509v2AttrCert;
+
+	public CmpCertificate(AttributeCertificate x509v2AttrCert)
+	{
+		this.x509v2AttrCert = x509v2AttrCert;
+	}
+
+	public CmpCertificate(X509CertificateStructure x509v3PKCert)
+	{
+		if (x509v3PKCert.Version != 3)
+		{
+			throw new ArgumentException("only version 3 certificates allowed", "x509v3PKCert");
+		}
+		this.x509v3PKCert = x509v3PKCert;
+	}
+
+	public static CmpCertificate GetInstance(object obj)
+	{
+		if (obj is CmpCertificate)
+		{
+			return (CmpCertificate)obj;
+		}
+		if (obj is Asn1Sequence)
+		{
+			return new CmpCertificate(X509CertificateStructure.GetInstance(obj));
+		}
+		if (obj is Asn1TaggedObject)
+		{
+			return new CmpCertificate(AttributeCertificate.GetInstance(((Asn1TaggedObject)obj).GetObject()));
+		}
+		throw new ArgumentException("Invalid object: " + Platform.GetTypeName(obj), "obj");
+	}
+
+	public override Asn1Object ToAsn1Object()
+	{
+		if (x509v2AttrCert != null)
+		{
+			return new DerTaggedObject(explicitly: true, 1, x509v2AttrCert);
+		}
+		return x509v3PKCert.ToAsn1Object();
+	}
+}