(AutoIt) Alliance Access LAU Sign Message (XML Signature using HMAC-SHA-256)

Demonstrates how to sign XML according to the requirements for Alliance Access LAU (Local Authentication) using HMAC-SHA-256.

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.

; We begin with this message:

; <?xml version="1.0" encoding="utf-8"?>
; <Saa:DataPDU xmlns:Saa="urn:swift:saa:xsd:saa.2.0" xmlns:Sw="urn:swift:snl:ns.Sw"
;   xmlns:SwGbl="urn:swift:snl:ns.SwGbl" xmlns:SwInt="urn:swift:snl:ns:SwInt" xmlns:SwSec="url:swift:snl:ns.SwSec">
;     <Saa:Revision>2.0.7</Saa:Revision>
;     <Saa:Header>
;         <Saa:Message>
; 			<test>blah blah</test>
;         </Saa:Message>
;     </Saa:Header>
;     <Saa:Body>...</Saa:Body>
;     <Saa:LAU>
;     </Saa:LAU>
; </Saa:DataPDU>

; And we want so sign to create this as the result:
; The signed XML we'll create will not be indented and pretty-printed like this.
; Instead, we'll use the "CompactSignedXml" behavior to produce compact single-line XML.

; <?xml version="1.0" encoding="utf-8"?>
; <Saa:DataPDU xmlns:Saa="urn:swift:saa:xsd:saa.2.0" xmlns:Sw="urn:swift:snl:ns.Sw"
;   xmlns:SwGbl="urn:swift:snl:ns.SwGbl" xmlns:SwInt="urn:swift:snl:ns:SwInt" xmlns:SwSec="url:swift:snl:ns.SwSec">
;     <Saa:Revision>2.0.7</Saa:Revision>
;     <Saa:Header>
;         <Saa:Message>
; 			<test>blah blah</test>
;         </Saa:Message>
;     </Saa:Header>
;     <Saa:Body>...</Saa:Body>
;     <Saa:LAU>
;         <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="">
;                     <ds:Transforms>
;                         <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
;                         <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
;                     </ds:Transforms>
;                     <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
;                     <ds:DigestValue>Y7oScHnYOUQvni/TSzZbDec+HR+mWIFH149GXpwj1Ws=</ds:DigestValue>
;                 </ds:Reference>
;             </ds:SignedInfo>
;             <ds:SignatureValue>6ynF/FcwbPsHrtlj3h2agJigdnvpbO6hOzKSRGzqkw0=</ds:SignatureValue>
;         </ds:Signature>
;     </Saa:LAU>
; </Saa:DataPDU>

Local $bSuccess = True

; Create the XML to be signed...

; (The XML does not need to be created this way.  It can be loaded from a file or a string.)
; Also, use this online tool to generate code from sample XML: 
; Generate Code to Create XML

$oXmlToSign = ObjCreate("Chilkat.Xml")
$oXmlToSign.Tag = "Saa:DataPDU"
$oXmlToSign.AddAttribute("xmlns:Saa","urn:swift:saa:xsd:saa.2.0")
$oXmlToSign.AddAttribute("xmlns:Sw","urn:swift:snl:ns.Sw")
$oXmlToSign.AddAttribute("xmlns:SwGbl","urn:swift:snl:ns.SwGbl")
$oXmlToSign.AddAttribute("xmlns:SwInt","urn:swift:snl:ns:SwInt")
$oXmlToSign.AddAttribute("xmlns:SwSec","url:swift:snl:ns.SwSec")
$oXmlToSign.UpdateChildContent "Saa:Revision","2.0.7"
$oXmlToSign.UpdateChildContent "Saa:Header|Saa:Message|test","blah blah"
$oXmlToSign.UpdateChildContent "Saa:Body","..."
$oXmlToSign.UpdateChildContent "Saa:LAU",""

$oGen = ObjCreate("Chilkat.XmlDSigGen")

$oGen.SigLocation = "Saa:DataPDU|Saa:LAU"
$oGen.SigLocationMod = 0
$oGen.SigNamespacePrefix = "ds"
$oGen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
$oGen.SignedInfoCanonAlg = "EXCL_C14N"
$oGen.SignedInfoDigestMethod = "sha256"

; You may alternatively choose "IndentedSignature" instead of "CompactSignedXml"
$oGen.Behaviors = "CompactSignedXml"

$oGen.AddSameDocRef("","sha256","EXCL_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..)
$oGen.SetHmacKey("secret","ascii")
; or
$oGen.SetHmacKey("c2VjcmV0","base64")
; or
$oGen.SetHmacKey("736563726574","hex")

; Sign the XML..
$oSbXml = ObjCreate("Chilkat.StringBuilder")
$oXmlToSign.GetXmlSb($oSbXml)
$bSuccess = $oGen.CreateXmlDSigSb($oSbXml)
If ($bSuccess <> True) Then
    ConsoleWrite($oGen.LastErrorText & @CRLF)
    Exit
EndIf

; Save the signed XML to a file.
$bSuccess = $oSbXml.WriteFile("qa_output/signedXml.xml","utf-8",False)

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