AutoIt

Create PKCS1 RSA Signature with PEM Private Key

See more RSA Examples

Demonstrates how to load a private key from a PEM file and create a PKCS1 RSA digital signature. AutoIt

Local $bSuccess = False

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

$oPkey = ObjCreate("Chilkat.PrivateKey")

; Load the private key from an RSA PEM file:
$bSuccess = $oPkey.LoadPemFile("pvkey2_rsa.pem")
If ($bSuccess = False) Then
    ConsoleWrite($oPkey.LastErrorText & @CRLF)
    Exit
EndIf

$oRsa = ObjCreate("Chilkat.Rsa")

; Import the private key into the RSA object:
$bSuccess = $oRsa.UsePrivateKey($oPkey)
If ($bSuccess = False) Then
    ConsoleWrite($oRsa.LastErrorText & @CRLF)
    Exit
EndIf

; Get the signature as hex.
$oRsa.EncodingMode = "hex"

Local $strData = "This is the string to be signed."

; Sign the string using the sha-1 hash algorithm.
; Other valid choices are "md2", "md5", "sha256",
; "sha384", and "sha512".
Local $sHexSig = $oRsa.SignStringENC($strData,"sha-1")

ConsoleWrite($sHexSig & @CRLF)

ConsoleWrite("Success!" & @CRLF)