AutoIt Requires Chilkat v11.0.0+

RSA Signature with Certificate's Private Key from PFX

See more RSA Examples

Demonstrates how to use a certificate's private key from a PFX file to create an RSA signature. AutoIt

Local $bSuccess = False

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

;  Create an instance of a certificate store object, load a PFX file,
;  locate the certificate we need, and use it for signing.
;  (a PFX file may contain more than one certificate.)
$oCertStore = ObjCreate("Chilkat.CertStore")

;  The 1st argument is the filename, the 2nd arg is the 
;  PFX file's password:
$bSuccess = $oCertStore.LoadPfxFile("chilkat.pfx","test")
If ($bSuccess = False) Then
    ConsoleWrite($oCertStore.LastErrorText & @CRLF)
    Exit
EndIf

;  Find the certificate by the subject common name:
$oJsonCN = ObjCreate("Chilkat.JsonObject")
$oJsonCN.UpdateString("CN","cert common name")

$oCert = ObjCreate("Chilkat.Cert")
$bSuccess = $oCertStore.FindCert($oJsonCN,$oCert)
If ($bSuccess = False) Then
    ConsoleWrite($oCertStore.LastErrorText & @CRLF)
    Exit
EndIf

$oPrivKey = ObjCreate("Chilkat.PrivateKey")
$bSuccess = $oCert.GetPrivateKey($oPrivKey)
If ($bSuccess = False) Then
    ConsoleWrite($oCert.LastErrorText & @CRLF)
    Exit
EndIf

$oRsa = ObjCreate("Chilkat.Rsa")

$bSuccess = $oRsa.UsePrivateKey($oPrivKey)
If ($bSuccess = False) Then
    ConsoleWrite($oRsa.LastErrorText & @CRLF)
    Exit
EndIf

;  Encode the signature as a hex string
$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 "sha-256", "md2" and "md5".
Local $sHexSig = $oRsa.SignStringENC($strData,"sha-1")

ConsoleWrite($sHexSig & @CRLF)

ConsoleWrite("Success!" & @CRLF)