AutoIt

Create JWT using a Brainpool EC Key

See more JSON Web Token (JWT) Examples

Demonstrates how to create a JWT using an EC private key. This is for JOSE headers having an "alg" member with any of the following values:

• BP160R1
• BP192R1
• BP224R1
• BP256R1
• BP320R1
• BP384R1
• BP512R1

This example also demonstrates how to include time constraints:

• nbf: Not Before Time
• exp: Expiration Time
• iat: Issue At Time

AutoIt

Local $bSuccess = False

; Demonstrates how to create a JWT using a brainpool EC private key.

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

$oPrivKey = ObjCreate("Chilkat.PrivateKey")

; Load a brainpool EC key.
$bSuccess = $oPrivKey.LoadPemFile("c:/qa_data/pem/ec_brainpool_privKey.pem")
If ($bSuccess <> True) Then
    ConsoleWrite($oPrivKey.LastErrorText & @CRLF)
    Exit
EndIf

; You can examine the curve name of the key you just loaded by getting the private in XML format:
; <ECCKeyValue curve="CURVE_NAME">...</ECCKeyValue>
ConsoleWrite($oPrivKey.GetXml() & @CRLF)

$oJwt = ObjCreate("Chilkat.Jwt")

; Build the JOSE header
$oJose = ObjCreate("Chilkat.JsonObject")
; Use the brainpool curve name matching the private key you just loaded.
; Use "BP256R1", or "BP384R1", etc.   
$bSuccess = $oJose.AppendString("alg","BP256R1")
$bSuccess = $oJose.AppendString("typ","JWT")

; Now build the JWT claims (also known as the payload)
$oClaims = ObjCreate("Chilkat.JsonObject")
$bSuccess = $oClaims.AppendString("iss","http://example.org")
$bSuccess = $oClaims.AppendString("sub","John")
$bSuccess = $oClaims.AppendString("aud","http://example.com")

; Set the timestamp of when the JWT was created to now.
Local $iCurDateTime = $oJwt.GenNumericDate(0)
$bSuccess = $oClaims.AddIntAt(-1,"iat",$iCurDateTime)

; Set the "not process before" timestamp to now.
$bSuccess = $oClaims.AddIntAt(-1,"nbf",$iCurDateTime)

; Set the timestamp defining an expiration time (end time) for the token
; to be now + 1 hour (3600 seconds)
$bSuccess = $oClaims.AddIntAt(-1,"exp",$iCurDateTime + 3600)

; Produce the smallest possible JWT:
$oJwt.AutoCompact = True

; Create the JWT token.  This is where the ECC signature is created.
Local $sToken = $oJwt.CreateJwtPk($oJose.Emit(),$oClaims.Emit(),$oPrivKey)

ConsoleWrite($sToken & @CRLF)