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Set the FTP Password from a SecureString

Demonstrates the Chilkat Ftp2.SetSecurePassword method, which sets the login password from a SecureString. The only argument is the SecureString. It is equivalent to setting the Password property but avoids holding the password as an ordinary immutable string.

Background: An ordinary string password can linger in memory (and in memory dumps) because strings are immutable and copied freely. A SecureString keeps the value encrypted under a session key and clears it deterministically, reducing that exposure — a sensible upgrade for a credential the process holds for the life of the connection. Populate it from a runtime source rather than a hard-coded literal.

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Local $bSuccess = False

;  Demonstrates the Ftp2.SetSecurePassword method, which sets the login password from a
;  SecureString.  The only argument is the SecureString.  This avoids holding the password as an
;  ordinary immutable string.

$oFtp = ObjCreate("Chilkat.Ftp2")

$oFtp.Hostname = "ftp.example.com"
$oFtp.Username = "myFtpLogin"

;  Normally you would not hard-code the password in source.  You should instead obtain it
;  from an interactive prompt, environment variable, or a secrets vault.
Local $sPassword = "myPassword"

;  Place the password into a SecureString, which keeps it encrypted in memory.
$oSecurePassword = ObjCreate("Chilkat.SecureString")
$oSecurePassword.Append($sPassword)

;  Setting the secure password is equivalent to setting the Password property, but more
;  protective.
$bSuccess = $oFtp.SetSecurePassword($oSecurePassword)
If ($bSuccess = False) Then
    ConsoleWrite($oFtp.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oFtp.Connect()
If ($bSuccess = False) Then
    ConsoleWrite($oFtp.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Connected using a secure password." & @CRLF)

$bSuccess = $oFtp.Disconnect()
If ($bSuccess = False) Then
    ConsoleWrite($oFtp.LastErrorText & @CRLF)
    Exit
EndIf