AutoIt

RSA Sign Using Private Key from .pfx/.p12 to Base64 Signature

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Demonstrates how to RSA sign something using a private key loaded from a .pfx/.p12. The RSA signature is returned in Base64 encoded format. AutoIt

Local $bSuccess = False

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

$oRsa = ObjCreate("Chilkat.Rsa")

; Load the .pfx/.p12
$oPfx = ObjCreate("Chilkat.Pfx")
$bSuccess = $oPfx.LoadPfxFile("qa_data/pfx/myKey.p12","myPassword")
If ($bSuccess = False) Then
    ConsoleWrite($oPfx.LastErrorText & @CRLF)
    Exit
EndIf

; Get the default private key.

$oPrivKey = ObjCreate("Chilkat.PrivateKey")
$bSuccess = $oPfx.PrivateKeyAt(0,$oPrivKey)
If ($bSuccess = False) Then
    ConsoleWrite($oPfx.LastErrorText & @CRLF)
    Exit
EndIf

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

; Get the signature in base64
$oRsa.EncodingMode = "base64"

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

; Sign the string using the sha256 hash algorithm.
; Other valid choices are "sha384", "sha512", "sha-1", "md2" and "md5".
Local $sBase64Sig = $oRsa.SignStringENC($strData,"sha256")

ConsoleWrite($sBase64Sig & @CRLF)

ConsoleWrite("Success!" & @CRLF)