(AutoIt) Create XML Digital Signature using HMAC Key

Demonstrates how to create an XML digital signature using an HMAC key.

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

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

; Signs the following XML using an HMAC key.

; <?xml version="1.0" encoding="UTF-8" standalone="no"?>
; <collection Id="root">
; 	<album>
; 		<title>Questions, unanswered</title>
; 		<artist>Steve and the flubberblubs</artist>
; 		<year>1989</year>
; 		<t:tracks xmlns:t="http://test.xades4j/tracks">
; 			<t:song length="4:05" tracknumber="1">
; 				<t:title>What do you know?</t:title>
; 				<t:artist>Steve and the flubberblubs</t:artist>
; 				<t:lastplayed>2006-10-17-08:31</t:lastplayed>
; 			</t:song>
; 			<t:song length="3:45" tracknumber="2">
; 				<t:title>Who do you know?</t:title>
; 				<t:artist>Steve and the flubberblubs</t:artist>
; 				<t:lastplayed>2006-10-17-08:35</t:lastplayed>
; 			</t:song>
; 			<t:song length="5:14" tracknumber="3">
; 				<t:title>When do you know?</t:title>
; 				<t:artist>Steve and the flubberblubs</t:artist>
; 				<t:lastplayed>2006-10-17-08:39</t:lastplayed>
; 			</t:song>
; 			<t:song length="4:19" tracknumber="4">
; 				<t:title>Do you know?</t:title>
; 				<t:artist>Steve and the flubberblubs</t:artist>
; 				<t:lastplayed>2006-10-17-08:44</t:lastplayed>
; 			</t:song>
; 		</t:tracks>
; 	</album>
; </collection>
; 

; The above XML is available at https://www.chilkatsoft.com/exampleData/flubberblub.xml
; Fetch the XML and then sign it..

Local $sUrl = "https://www.chilkatsoft.com/exampleData/flubberblub.xml"
$oHttp = ObjCreate("Chilkat.Http")
$oSbXml = ObjCreate("Chilkat.StringBuilder")
Local $bSuccess = $oHttp.QuickGetSb($sUrl,$oSbXml)
If ($bSuccess <> True) Then
    ConsoleWrite($oHttp.LastErrorText & @CRLF)
    Exit
EndIf

$oXmlSigGen = ObjCreate("Chilkat.XmlDSigGen")

; The Signature will be inserted under the "collection" element.
$oXmlSigGen.SigLocation = "collection"

; Sign everything in <collection Id="root"> ... </collection>
$oXmlSigGen.AddSameDocRef("root","sha256","C14N","","")

; Specify the HMAC key.
; For example, if the HMAC key is to be the us-ascii bytes of the string "secret",
; the HMAC key can be set in any of the following ways (and also more ways not shown here..)
$oXmlSigGen.SetHmacKey("secret","ascii")
; or
$oXmlSigGen.SetHmacKey("c2VjcmV0","base64")
; or
$oXmlSigGen.SetHmacKey("736563726574","hex")

; Sign the XML..
$bSuccess = $oXmlSigGen.CreateXmlDSigSb($oSbXml)
If ($bSuccess <> True) Then
    ConsoleWrite($oXmlSigGen.LastErrorText & @CRLF)
    Exit
EndIf

; Examine the signed XML:
ConsoleWrite($oSbXml.GetAsString() & @CRLF)

; The output is:
; 
; <?xml version="1.0" encoding="UTF-8" standalone="no"?>
; <collection Id="root">
; 	<album>
; 		<title>Questions, unanswered</title>
; 		<artist>Steve and the flubberblubs</artist>
; 		<year>1989</year>
; 		<t:tracks xmlns:t="http://test.xades4j/tracks">
; 			<t:song length="4:05" tracknumber="1">
; 				<t:title>What do you know?</t:title>
; 				<t:artist>Steve and the flubberblubs</t:artist>
; 				<t:lastplayed>2006-10-17-08:31</t:lastplayed>
; 			</t:song>
; 			<t:song length="3:45" tracknumber="2">
; 				<t:title>Who do you know?</t:title>
; 				<t:artist>Steve and the flubberblubs</t:artist>
; 				<t:lastplayed>2006-10-17-08:35</t:lastplayed>
; 			</t:song>
; 			<t:song length="5:14" tracknumber="3">
; 				<t:title>When do you know?</t:title>
; 				<t:artist>Steve and the flubberblubs</t:artist>
; 				<t:lastplayed>2006-10-17-08:39</t:lastplayed>
; 			</t:song>
; 			<t:song length="4:19" tracknumber="4">
; 				<t:title>Do you know?</t:title>
; 				<t:artist>Steve and the flubberblubs</t:artist>
; 				<t:lastplayed>2006-10-17-08:44</t:lastplayed>
; 			</t:song>
; 		</t:tracks>
; 	</album>
; <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#hmac-sha256"/><ds:Reference URI="#root"><ds:Transforms><ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/></ds:Transforms><ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><ds:DigestValue>rD/g8soqKz8EiPUBhEWfcQacS0ta4ULHX3dKMEH6ZoQ=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>R8dXP95VRYJBfL6d0Peogybdk27+R+JIfX8jnVu0NOI=</ds:SignatureValue></ds:Signature></collection>
;