AutoIt

RSA Signature SHA256withRSA, iso-8859-1, base64

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RSA sign the iso-8859-1 byte representation of a string with SHA256withRSA, and return the signature in the base64 encoding. AutoIt

Local $bSuccess = False

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

; This example will duplicate the following Java code:
; 
; Signature sign = Signature.getInstance("SHA256withRSA");
; sign.initSign(privateKey);
; sign.update(original.getBytes(Charset.forName("ISO-8859-1")));
; 
; ...
; byte[] resultado = sign.sign();
; sello = encodeByteArrayToBase64(resultado);
; 

; Load an RSA private key for signing.
; You can load any format file.  This example loads a .pem, but you can provide path to any type of file holding a private key.
$oPrivKey = ObjCreate("Chilkat.PrivateKey")
$bSuccess = $oPrivKey.LoadAnyFormatFile("qa_data/pem/rsa_passwd.pem","passwd")
If ($bSuccess = False) Then
    ConsoleWrite($oPrivKey.LastErrorText & @CRLF)
    Exit
EndIf

$oRsa = ObjCreate("Chilkat.Rsa")
$oRsa.UsePrivateKey($oPrivKey)

Local $sOriginalData = "This is the string to be hashed an RSA signed."

; Indicate that we want the iso-8859-1 byte representation of the string to be signed
$oRsa.Charset = "iso-8859-1"

; We want the RSA signature in base64 format
$oRsa.EncodingMode = "base64"

Local $sigBase64 = $oRsa.SignStringENC($sOriginalData,"sha256")
ConsoleWrite($sigBase64 & @CRLF)