Decode private key doesn't work.

[digitalhuman]

Below code generates Exception thrown: 'System.Security.Cryptography.CryptographicException' in mscorlib.dll.
I am using .NET 4.6.1 with 4096 bits RSA private key

string pkey = File.ReadAllText(@"C:\Temp\private.key");
            IOpenSSLPrivateKeyDecoder privateKeyDecode = new OpenSSLPrivateKeyDecoder();
            var rsa = privateKeyDecode.DecodeParameters(pkey);
            RSACryptoServiceProvider provider = new RSACryptoServiceProvider();
            provider.ImportParameters(rsa);

[digitalhuman]

Im only using OpenSSL.PrivateKeyDecode.dll. Could that be the issue?

[ashikiqbal]

Getting error here: Specified method is not supported.

[StefH]

@digitalhuman and @ashikiqbal can you provide a full working example?