System.Security.Cryptography.ECDsa.Create C# (CSharp) Method

        public static new ECDsa Create()
        {
            return new ECDsaImplementation.ECDsaOpenSsl();
        }

        public static object?CreateFromName(string name, params object?[]?args)
        {
            ArgumentNullException.ThrowIfNull(name);

#if BROWSER
            switch (name)
            {
#pragma warning disable SYSLIB0021 // Obsolete: derived cryptographic types
            // hardcode mapping for SHA* and HMAC* algorithm names from https://docs.microsoft.com/en-us/dotnet/api/system.security.cryptography.cryptoconfig?view=net-5.0#remarks
            case "SHA":
            case "SHA1":
            case "System.Security.Cryptography.SHA1":
                return(new SHA1Managed());

            case "SHA256":
            case "SHA-256":
            case "System.Security.Cryptography.SHA256":
                return(new SHA256Managed());

            case "SHA384":
            case "SHA-384":
            case "System.Security.Cryptography.SHA384":
                return(new SHA384Managed());

            case "SHA512":
            case "SHA-512":
            case "System.Security.Cryptography.SHA512":
                return(new SHA512Managed());

#pragma warning restore SYSLIB0021

            case "System.Security.Cryptography.HMAC":
            case "HMACSHA1":
            case "System.Security.Cryptography.HMACSHA1":
            case "System.Security.Cryptography.KeyedHashAlgorithm":
                return(new HMACSHA1());

            case "HMACSHA256":
            case "System.Security.Cryptography.HMACSHA256":
                return(new HMACSHA256());

            case "HMACSHA384":
            case "System.Security.Cryptography.HMACSHA384":
                return(new HMACSHA384());

            case "HMACSHA512":
            case "System.Security.Cryptography.HMACSHA512":
                return(new HMACSHA512());

#pragma warning disable SYSLIB0021 // Obsolete: derived cryptographic types
            case "AES":
            case "System.Security.Cryptography.AesCryptoServiceProvider":
                return(new AesCryptoServiceProvider());

            case "AesManaged":
            case "System.Security.Cryptography.AesManaged":
                return(new AesManaged());

            case "Rijndael":
            case "System.Security.Cryptography.Rijndael":
#pragma warning disable SYSLIB0022 // Rijndael types are obsolete
                return(new RijndaelManaged());

#pragma warning restore SYSLIB0022
#pragma warning restore SYSLIB0021
            }

            return(null);
#else
            // Check to see if we have an application defined mapping
            appNameHT.TryGetValue(name, out Type? retvalType);

            // We allow the default table to Types and Strings
            // Types get used for types in .Algorithms assembly.
            // strings get used for delay-loaded stuff in other assemblies such as .Csp.
            if (retvalType == null && DefaultNameHT.TryGetValue(name, out object?retvalObj))
            {
                retvalType = retvalObj as Type;

                if (retvalType == null)
                {
                    if (retvalObj is string retvalString)
                    {
                        retvalType = Type.GetType(retvalString, false, false);
                        if (retvalType != null && !retvalType.IsVisible)
                        {
                            retvalType = null;
                        }

                        if (retvalType != null)
                        {
                            // Add entry to the appNameHT, which makes subsequent calls much faster.
                            appNameHT[name] = retvalType;
                        }
                    }
                    else
                    {
                        Debug.Fail("Unsupported Dictionary value:" + retvalObj.ToString());
                    }
                }
            }

            // Special case asking for "ECDsa" since the default map from .NET Framework uses
            // a Windows-only type.
            if (retvalType == null &&
                (args == null || args.Length == 1) &&
                name == ECDsaIdentifier)
            {
                return(ECDsa.Create());
            }

            // Maybe they gave us a classname.
            if (retvalType == null)
            {
                retvalType = Type.GetType(name, false, false);
                if (retvalType != null && !retvalType.IsVisible)
                {
                    retvalType = null;
                }
            }

            // Still null? Then we didn't find it.
            if (retvalType == null)
            {
                return(null);
            }

            // Locate all constructors.
            MethodBase[] cons = retvalType.GetConstructors(ConstructorDefault);
            if (cons == null)
            {
                return(null);
            }

            if (args == null)
            {
                args = Array.Empty <object>();
            }

            List <MethodBase> candidates = new List <MethodBase>();
            for (int i = 0; i < cons.Length; i++)
            {
                MethodBase con = cons[i];
                if (con.GetParameters().Length == args.Length)
                {
                    candidates.Add(con);
                }
            }

            if (candidates.Count == 0)
            {
                return(null);
            }

            cons = candidates.ToArray();

            // Bind to matching ctor.
            ConstructorInfo?rci = Type.DefaultBinder.BindToMethod(
                ConstructorDefault,
                cons,
                ref args,
                null,
                null,
                null,
                out object?state) as ConstructorInfo;

            // Check for ctor we don't like (non-existent, delegate or decorated with declarative linktime demand).
            if (rci == null || typeof(Delegate).IsAssignableFrom(rci.DeclaringType))
            {
                return(null);
            }

            // Ctor invoke and allocation.
            object retval = rci.Invoke(ConstructorDefault, Type.DefaultBinder, args, null);

            // Reset any parameter re-ordering performed by the binder.
            if (state != null)
            {
                Type.DefaultBinder.ReorderArgumentArray(ref args, state);
            }

            return(retval);
#endif
        }