Visual FoxPro

SFTP Public-Key Authentication

See more SFTP Examples

Demonstrates how to authenticate with an SSH/SFTP server using publickey authentication. Visual FoxPro

LOCAL lnSuccess
LOCAL loSftp
LOCAL lcHostname
LOCAL lnPort
LOCAL loKey
LOCAL lcPrivKey

lnSuccess = 0

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

loSftp = CreateObject('Chilkat.SFtp')

*  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 = "sftp.example.com"
lnPort = 22
lnSuccess = loSftp.Connect(lcHostname,lnPort)
IF (lnSuccess <> 1) THEN
    ? loSftp.LastErrorText
    RELEASE loSftp
    CANCEL
ENDIF

loKey = CreateObject('Chilkat.SshKey')

*  Load a 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.)
lcPrivKey = loKey.LoadText("myPrivateKey.pem")
IF (loKey.LastMethodSuccess <> 1) THEN
    ? loKey.LastErrorText
    RELEASE loSftp
    RELEASE loKey
    CANCEL
ENDIF

*  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.
lnSuccess = loKey.FromOpenSshPrivateKey(lcPrivKey)
IF (lnSuccess <> 1) THEN
    ? loKey.LastErrorText
    RELEASE loSftp
    RELEASE loKey
    CANCEL
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
    ? loSftp.LastErrorText
    RELEASE loSftp
    RELEASE loKey
    CANCEL
ENDIF

? loSftp.LastErrorText
? "Public-Key Authentication Successful!"

RELEASE loSftp
RELEASE loKey