SSH Public Key Authentication

Demonstrates how to authenticate with an SSH server using public key authentication.

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//  Important: It is helpful to send the contents of the
//  sftp.LastErrorText property when sending email
//  to support@chilkatsoft.com

Chilkat.Ssh ssh = new Chilkat.Ssh();

//  Any string automatically begins a fully-functional 30-day trial.
bool success;
success = ssh.UnlockComponent("Anything for 30-day trial");
if (success != true) {
    textBox1.Text += ssh.LastErrorText + "\r\n";
    return;
}

//  Set some timeouts, in milliseconds:
ssh.ConnectTimeoutMs = 5000;
ssh.IdleTimeoutMs = 15000;

//  Connect to the SSH server.
//  The standard SSH port = 22
//  The hostname may be a hostname or IP address.
int port;
string hostname;
hostname = "www.my-ssh-server.com";
port = 22;
success = ssh.Connect(hostname,port);
if (success != true) {
    textBox1.Text += ssh.LastErrorText + "\r\n";
    return;
}

Chilkat.SshKey key = new Chilkat.SshKey();

//  Load a private key from a PEM file:
//  (Private keys may be loaded from OpenSSH and Putty formats.
//  Both encrypted and unencrypted private key file formats
//  are supported.  This example loads an unencrypted private
//  key in OpenSSH format.  PuTTY keys typically use the .ppk
//  file extension, while OpenSSH keys use the PEM format.
string privKey;
privKey = key.LoadText("myPrivateKey.pem");
if (privKey == null ) {
    textBox1.Text += key.LastErrorText + "\r\n";
    return;
}

//  (For PuTTY keys, call FromPuttyPrivateKey instead.)
success = key.FromOpenSshPrivateKey(privKey);
if (success != true) {
    textBox1.Text += key.LastErrorText + "\r\n";
    return;
}

//  Authenticate with the SSH server using the login and
//  private key.  (The corresponding public key should've
//  been installed on the SSH server beforehand.)
success = ssh.AuthenticatePk("myLogin",key);
if (success != true) {
    textBox1.Text += ssh.LastErrorText + "\r\n";
    return;
}

MessageBox.Show(ssh.LastErrorText);
MessageBox.Show("Public-Key Authentication Successful!");