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output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Asn1/X9/ECNamedCurveTable.cs

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+using System.Collections;
+using Org.BouncyCastle.Asn1.Anssi;
+using Org.BouncyCastle.Asn1.CryptoPro;
+using Org.BouncyCastle.Asn1.GM;
+using Org.BouncyCastle.Asn1.Nist;
+using Org.BouncyCastle.Asn1.Sec;
+using Org.BouncyCastle.Asn1.TeleTrust;
+using Org.BouncyCastle.Crypto.Parameters;
+using Org.BouncyCastle.Utilities;
+using Org.BouncyCastle.Utilities.Collections;
+
+namespace Org.BouncyCastle.Asn1.X9;
+
+public class ECNamedCurveTable
+{
+	public static IEnumerable Names
+	{
+		get
+		{
+			IList list = Platform.CreateArrayList();
+			CollectionUtilities.AddRange(list, X962NamedCurves.Names);
+			CollectionUtilities.AddRange(list, SecNamedCurves.Names);
+			CollectionUtilities.AddRange(list, NistNamedCurves.Names);
+			CollectionUtilities.AddRange(list, TeleTrusTNamedCurves.Names);
+			CollectionUtilities.AddRange(list, AnssiNamedCurves.Names);
+			CollectionUtilities.AddRange(list, ECGost3410NamedCurves.Names);
+			CollectionUtilities.AddRange(list, GMNamedCurves.Names);
+			return list;
+		}
+	}
+
+	public static X9ECParameters GetByName(string name)
+	{
+		X9ECParameters x9ECParameters = X962NamedCurves.GetByName(name);
+		if (x9ECParameters == null)
+		{
+			x9ECParameters = SecNamedCurves.GetByName(name);
+		}
+		if (x9ECParameters == null)
+		{
+			x9ECParameters = NistNamedCurves.GetByName(name);
+		}
+		if (x9ECParameters == null)
+		{
+			x9ECParameters = TeleTrusTNamedCurves.GetByName(name);
+		}
+		if (x9ECParameters == null)
+		{
+			x9ECParameters = AnssiNamedCurves.GetByName(name);
+		}
+		if (x9ECParameters == null)
+		{
+			x9ECParameters = FromDomainParameters(ECGost3410NamedCurves.GetByName(name));
+		}
+		if (x9ECParameters == null)
+		{
+			x9ECParameters = GMNamedCurves.GetByName(name);
+		}
+		return x9ECParameters;
+	}
+
+	public static string GetName(DerObjectIdentifier oid)
+	{
+		string name = X962NamedCurves.GetName(oid);
+		if (name == null)
+		{
+			name = SecNamedCurves.GetName(oid);
+		}
+		if (name == null)
+		{
+			name = NistNamedCurves.GetName(oid);
+		}
+		if (name == null)
+		{
+			name = TeleTrusTNamedCurves.GetName(oid);
+		}
+		if (name == null)
+		{
+			name = AnssiNamedCurves.GetName(oid);
+		}
+		if (name == null)
+		{
+			name = ECGost3410NamedCurves.GetName(oid);
+		}
+		if (name == null)
+		{
+			name = GMNamedCurves.GetName(oid);
+		}
+		return name;
+	}
+
+	public static DerObjectIdentifier GetOid(string name)
+	{
+		DerObjectIdentifier oid = X962NamedCurves.GetOid(name);
+		if (oid == null)
+		{
+			oid = SecNamedCurves.GetOid(name);
+		}
+		if (oid == null)
+		{
+			oid = NistNamedCurves.GetOid(name);
+		}
+		if (oid == null)
+		{
+			oid = TeleTrusTNamedCurves.GetOid(name);
+		}
+		if (oid == null)
+		{
+			oid = AnssiNamedCurves.GetOid(name);
+		}
+		if (oid == null)
+		{
+			oid = ECGost3410NamedCurves.GetOid(name);
+		}
+		if (oid == null)
+		{
+			oid = GMNamedCurves.GetOid(name);
+		}
+		return oid;
+	}
+
+	public static X9ECParameters GetByOid(DerObjectIdentifier oid)
+	{
+		X9ECParameters x9ECParameters = X962NamedCurves.GetByOid(oid);
+		if (x9ECParameters == null)
+		{
+			x9ECParameters = SecNamedCurves.GetByOid(oid);
+		}
+		if (x9ECParameters == null)
+		{
+			x9ECParameters = TeleTrusTNamedCurves.GetByOid(oid);
+		}
+		if (x9ECParameters == null)
+		{
+			x9ECParameters = AnssiNamedCurves.GetByOid(oid);
+		}
+		if (x9ECParameters == null)
+		{
+			x9ECParameters = FromDomainParameters(ECGost3410NamedCurves.GetByOid(oid));
+		}
+		if (x9ECParameters == null)
+		{
+			x9ECParameters = GMNamedCurves.GetByOid(oid);
+		}
+		return x9ECParameters;
+	}
+
+	private static X9ECParameters FromDomainParameters(ECDomainParameters dp)
+	{
+		if (dp != null)
+		{
+			return new X9ECParameters(dp.Curve, dp.G, dp.N, dp.H, dp.GetSeed());
+		}
+		return null;
+	}
+}