(AutoIt) RSASSA-PSS Algorithm with SHA256 Hashing

RSA encrypt a SHA256 hash with OAEP padding.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Local $bSuccess = False

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

$oPrivkey = ObjCreate("Chilkat.PrivateKey")

; Load the private key object from a PEM file.
; (To load from a PEM string, call LoadPem instead.)
$bSuccess = $oPrivkey.LoadPemFile("somePath/myPrivateKey.pem")
If ($bSuccess = False) Then
    ConsoleWrite($oPrivkey.LastErrorText & @CRLF)
    Exit
EndIf

$oRsa = ObjCreate("Chilkat.Rsa")
; Use RSA-PSS by setting OaepPadding = True
$oRsa.OaepPadding = True
; Use SHA256
$oRsa.OaepHash = "SHA-256"

$oRsa.UsePrivateKey($oPrivkey)

; Generate a base64 signature.
$oRsa.EncodingMode = "base64"

Local $sigStr = $oRsa.SignStringENC("String to be signed","SHA-256")
If ($oRsa.LastMethodSuccess = False) Then
    ConsoleWrite($oRsa.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Signature: " & $sigStr & @CRLF)