SSH.NET is a Secure Shell (SSH-2) library for .NET, optimized for parallelism.

This is a cloned and slightly updated build of SSH.NET with the support for unit test.

Features

• Execution of SSH command using both synchronous and asynchronous methods
• Return command execution exit status and other information
• Provide SFTP functionality for both synchronous and asynchronous operations
• Provides SCP functionality
• Provide status report for upload and download sftp operations to allow accurate progress bar implementation
• Remote, dynamic and local port forwarding
• Shell/Terminal implementation
• Specify key file pass phrase
• Use multiple key files to authenticate
• Supports publickey, password and keyboard-interactive authentication methods
• Supports two-factor or higher authentication
• Supports SOCKS4, SOCKS5 and HTTP Proxy

Encryption Method

SSH.NET supports the following encryption methods:

• aes256-ctr
• 3des-cbc
• aes128-cbc
• aes192-cbc
• aes256-cbc
• blowfish-cbc
• twofish-cbc
• twofish192-cbc
• twofish128-cbc
• twofish256-cbc
• arcfour
• arcfour128
• arcfour256
• cast128-cbc
• aes128-ctr
• aes192-ctr

Key Exchange Method

SSH.NET supports the following key exchange methods:

• curve25519-sha256
• curve25519-sha256@libssh.org
• ecdh-sha2-nistp256
• ecdh-sha2-nistp384
• ecdh-sha2-nistp521
• diffie-hellman-group-exchange-sha256
• diffie-hellman-group-exchange-sha1
• diffie-hellman-group16-sha512
• diffie-hellman-group14-sha256
• diffie-hellman-group14-sha1
• diffie-hellman-group1-sha1

Public Key Authentication

SSH.NET supports the following private key formats:

• RSA in OpenSSL PEM and ssh.com format
• DSA in OpenSSL PEM and ssh.com format
• ECDSA 256/384/521 in OpenSSL PEM format
• ED25519 in OpenSSH key format

Private keys can be encrypted using one of the following cipher methods:

• DES-EDE3-CBC
• DES-EDE3-CFB
• DES-CBC
• AES-128-CBC
• AES-192-CBC
• AES-256-CBC

Host Key Algorithms

SSH.NET supports the following host key algorithms:

• ssh-ed25519
• ecdsa-sha2-nistp256
• ecdsa-sha2-nistp384
• ecdsa-sha2-nistp521
• ssh-rsa
• ssh-dss

Message Authentication Code

SSH.NET supports the following MAC algorithms:

• hmac-md5
• hmac-md5-96
• hmac-sha1
• hmac-sha1-96
• hmac-sha2-256
• hmac-sha2-256-96
• hmac-sha2-512
• hmac-sha2-512-96
• hmac-ripemd160
• hmac-ripemd160@openssh.com

Framework Support

SSH.NET supports the following target frameworks:

• .NET Framework 3.5
• .NET Framework 4.0 (and higher)
• .NET Standard 1.3
• .NET Standard 2.0
• Silverlight 4
• Silverlight 5
• Windows Phone 7.1
• Windows Phone 8.0
• Universal Windows Platform 10

Usage

Multi-factor authentication

Establish a SFTP connection using both password and public-key authentication:

var connectionInfo = new ConnectionInfo("sftp.foo.com",
                                        "guest",
                                        new PasswordAuthenticationMethod("guest", "pwd"),
                                        new PrivateKeyAuthenticationMethod("rsa.key"));
using (var client = new SftpClient(connectionInfo))
{
    client.Connect();
}

Verify host identify

Establish a SSH connection using user name and password, and reject the connection if the fingerprint of the server does not match the expected fingerprint:

byte[] expectedFingerPrint = new byte[] {
                                            0x66, 0x31, 0xaf, 0x00, 0x54, 0xb9, 0x87, 0x31,
                                            0xff, 0x58, 0x1c, 0x31, 0xb1, 0xa2, 0x4c, 0x6b
                                        };

using (var client = new SshClient("sftp.foo.com", "guest", "pwd"))
{
    client.HostKeyReceived += (sender, e) =>
        {
            if (expectedFingerPrint.Length == e.FingerPrint.Length)
            {
                for (var i = 0; i < expectedFingerPrint.Length; i++)
                {
                    if (expectedFingerPrint[i] != e.FingerPrint[i])
                    {
                        e.CanTrust = false;
                        break;
                    }
                }
            }
            else
            {
                e.CanTrust = false;
            }
        };
    client.Connect();
}

Building SSH.NET

Software	net35	net40	netstandard1.3	netstandard2.0	sl4	sl5	wp71	wp8	uap10.0
Windows Phone SDK 8.0					x	x	x	x
Visual Studio 2012 Update 5	x	x			x	x	x	x
Visual Studio 2015 Update 3	x	x				x		x	x
Visual Studio 2017	x	x	x	x
Visual Studio 2019	x	x	x	x