using System;

using System.Linq;

using System.IO;

using Renci.SshNet;

using System.Text;

public class Program

{

    public static void Main()

    {

       var key = @"-----BEGIN OPENSSH PRIVATE KEY-----

b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW

QyNTUxOQAAACCXh/hzgihW+MyThoACSVPrcyxq2mR3X07BINeo0EAxRQAAAJgzheTNM4Xk

zQAAAAtzc2gtZWQyNTUxOQAAACCXh/hzgihW+MyThoACSVPrcyxq2mR3X07BINeo0EAxRQ

AAAECyv5JGjoNs6lPe8gdUjlSaOddVNJ4z3sF9ErOQpfcXwZeH+HOCKFb4zJOGgAJJU+tz

LGraZHdfTsEg16jQQDFFAAAAFW1yb3NhQE1ST1NBLUNMT1NFUi1QQw==

-----END OPENSSH PRIVATE KEY-----";

​

       MemoryStream keyStream = new MemoryStream(Encoding.UTF8.GetBytes(key));

​

       Renci.SshNet.ConnectionInfo connn = new Renci.SshNet.ConnectionInfo(

           "141.147.35.80",

           "tml",

           new AuthenticationMethod[]

           {

new PrivateKeyAuthenticationMethod("tml", new PrivateKeyFile[]

{

   new PrivateKeyFile(keyStream, ""),

}),

           });

        connn.AuthenticationMethods[0].Dump();

    }

}