AutoIt

Get a JWS Protected Header

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.GetProtectedH, which copies the decoded protected header of a signature into a JsonObject.

Background. The protected header is integrity-protected by the signature. Inspecting it (for example the alg value) is useful before deciding how to validate.

Chilkat AutoIt Downloads

Download Chilkat for AutoIt

AutoIt

Local $bSuccess = False

$oJws = ObjCreate("Chilkat.Jws")

;  Load the JWS compact serialization.
Local $sJwsCompact = "eyJhbGciOiJIUzI1NiJ9.VGhpcyBpcyB0aGUgY29udGVudCB0byBzaWduLg.<signature>"
$bSuccess = $oJws.LoadJws($sJwsCompact)
If ($bSuccess = False) Then
    ConsoleWrite($oJws.LastErrorText & @CRLF)
    Exit
EndIf

;  Copy the decoded protected header of signature 0 into a JsonObject.
$oJson = ObjCreate("Chilkat.JsonObject")
$bSuccess = $oJws.GetProtectedH(0,$oJson)
If ($bSuccess = False) Then
    ConsoleWrite($oJws.LastErrorText & @CRLF)
    Exit
EndIf

$oJson.EmitCompact = False
ConsoleWrite($oJson.Emit() & @CRLF)