Sign a JWS with a Private Key

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.SetPrivateKey, which sets the private key used to create a signature. The example uses RS256 (RSASSA-PKCS1-v1_5 with SHA-256).

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

Local $bSuccess = False

$oJws = ObjCreate("Chilkat.Jws")

;  Protected header specifying RSASSA-PKCS1-v1_5 with SHA-256 (RS256).
$oHeader = ObjCreate("Chilkat.JsonObject")
$oHeader.UpdateString("alg","RS256")
$bSuccess = $oJws.SetProtectedHeader(0,$oHeader)
If ($bSuccess = False) Then
    ConsoleWrite($oJws.LastErrorText & @CRLF)
    Exit
EndIf

Local $bIncludeBom = False
$bSuccess = $oJws.SetPayload("This is the content to sign.","utf-8",$bIncludeBom)
If ($bSuccess = False) Then
    ConsoleWrite($oJws.LastErrorText & @CRLF)
    Exit
EndIf

;  The file path is relative to the application's current working directory.  An absolute path
;  may also be used.  Supply the path appropriate to your own environment.
;  Load the signer's private key and set it for signature 0.
$oPrivKey = ObjCreate("Chilkat.PrivateKey")
$bSuccess = $oPrivKey.LoadPemFile("qa_data/signer_privkey.pem")
If ($bSuccess = False) Then
    ConsoleWrite($oPrivKey.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oJws.SetPrivateKey(0,$oPrivKey)
If ($bSuccess = False) Then
    ConsoleWrite($oJws.LastErrorText & @CRLF)
    Exit
EndIf

Local $sJwsCompact = $oJws.CreateJws()
If ($oJws.LastMethodSuccess = False) Then
    ConsoleWrite($oJws.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite($sJwsCompact & @CRLF)