SSH Public Key Authentication

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

Download Chilkat 32-bit SSH / SFTP ActiveX (.msi)

Download All 32-bit Chilkat ActiveX Components (.zip)

Download All 64-bit Chilkat ActiveX Components (.zip)

LOCAL loSsh
LOCAL lnSuccess
LOCAL lnPort
LOCAL lcHostname
LOCAL loKey
LOCAL lcPrivKey

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

loSsh = CreateObject('Chilkat.Ssh')

*  Any string automatically begins a fully-functional 30-day trial.

lnSuccess = loSsh.UnlockComponent("Anything for 30-day trial")
IF (lnSuccess <> 1) THEN
    ? loSsh.LastErrorText
    QUIT
ENDIF

*  Set some timeouts, in milliseconds:
loSsh.ConnectTimeoutMs = 5000
loSsh.IdleTimeoutMs = 15000

*  Connect to the SSH server.
*  The standard SSH port = 22
*  The hostname may be a hostname or IP address.

lcHostname = "www.my-ssh-server.com"
lnPort = 22
lnSuccess = loSsh.Connect(lcHostname,lnPort)
IF (lnSuccess <> 1) THEN
    ? loSsh.LastErrorText
    QUIT
ENDIF

loKey = CreateObject('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.

lcPrivKey = loKey.LoadText("myPrivateKey.pem")
IF (lcPrivKey = NULL ) THEN
    ? loKey.LastErrorText
    QUIT
ENDIF

*  (For PuTTY keys, call FromPuttyPrivateKey instead.)
lnSuccess = loKey.FromOpenSshPrivateKey(lcPrivKey)
IF (lnSuccess <> 1) THEN
    ? loKey.LastErrorText
    QUIT
ENDIF

*  Authenticate with the SSH server using the login and
*  private key.  (The corresponding public key should've
*  been installed on the SSH server beforehand.)
lnSuccess = loSsh.AuthenticatePk("myLogin",loKey)
IF (lnSuccess <> 1) THEN
    ? loSsh.LastErrorText
    QUIT
ENDIF

=MESSAGEBOX(loSsh.LastErrorText)
=MESSAGEBOX("Public-Key Authentication Successful!")