(PHP ActiveX) SSH Public Key Authentication

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Ssh')
$ssh = new COM("Chilkat.Ssh");

// 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.
$hostname = 'sftp.example.com';
$port = 22;
$success = $ssh->Connect($hostname,$port);
if ($success != 1) {
    print $ssh->LastErrorText . "\n";
    exit;
}

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.SshKey')
$key = new COM("Chilkat.SshKey");

// Read the PEM file into a string variable:
// (This does not load the PEM file into the key.  The LoadText
// method is a convenience method for loading the full contents of ANY text
// file into a string variable.)
$privKey = $key->loadText('myPrivateKey.pem');
if ($key->LastMethodSuccess != 1) {
    print $key->LastErrorText . "\n";
    exit;
}

// Load a private key from a PEM string:
// (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.
// (For PuTTY keys, call FromPuttyPrivateKey instead.)
$success = $key->FromOpenSshPrivateKey($privKey);
if ($success != 1) {
    print $key->LastErrorText . "\n";
    exit;
}

// 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 != 1) {
    print $ssh->LastErrorText . "\n";
    exit;
}

print $ssh->LastErrorText . "\n";
print 'Public-Key Authentication Successful!' . "\n";

?>