SFTP Public-Key Authentication

Demonstrates how to authenticate with an SSH server using publickey 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 loSftp
LOCAL lnSuccess
LOCAL lnPort
LOCAL lcHostname
LOCAL loKey
LOCAL lcPrivKey

*  Important: It is helpful to send the contents of the
*  sftp.LastErrorText property when requesting support.

loSftp = CreateObject('Chilkat.SFtp')

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

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

*  Set some timeouts, in milliseconds:
loSftp.ConnectTimeoutMs = 5000
loSftp.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 = loSftp.Connect(lcHostname,lnPort)
IF (lnSuccess <> 1) THEN
    =MESSAGEBOX(loSftp.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.

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

lnSuccess = loKey.FromOpenSshPrivateKey(lcPrivKey)
IF (lnSuccess <> 1) THEN
    =MESSAGEBOX(loKey.LastErrorText)
    QUIT
ENDIF

*  Authenticate with the SSH server.  Chilkat SFTP supports
*  both password-based authenication as well as public-key
*  authentication.
lnSuccess = loSftp.AuthenticatePk("myLogin",loKey)
IF (lnSuccess <> 1) THEN
    =MESSAGEBOX(loSftp.LastErrorText)
    QUIT
ENDIF

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