(Lianja) SFTP Public-Key Authentication

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

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

loSftp = createobject("CkSFtp")

// 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
llSuccess = loSftp.Connect(lcHostname,lnPort)
if (llSuccess <> .T.) then
    ? loSftp.LastErrorText
    release loSftp
    return
endif

loKey = createobject("CkSshKey")

// 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 <> .T.) then
    ? loKey.LastErrorText
    release loSftp
    release loKey
    return
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.
llSuccess = loKey.FromOpenSshPrivateKey(lcPrivKey)
if (llSuccess <> .T.) then
    ? loKey.LastErrorText
    release loSftp
    release loKey
    return
endif

// Authenticate with the SSH server.  Chilkat SFTP supports
// both password-based authenication as well as public-key
// authentication.  
llSuccess = loSftp.AuthenticatePk("myLogin",loKey)
if (llSuccess <> .T.) then
    ? loSftp.LastErrorText
    release loSftp
    release loKey
    return
endif

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


release loSftp
release loKey