Classic ASP

Create a JWS

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.CreateJws, which creates and returns a JWS from the current payload, headers, and signing key.

Background. JWS (JSON Web Signature) integrity-protects a payload with a signature or MAC. The header alg names the algorithm; this example uses HMAC-SHA256 (HS256) with a symmetric MAC key.

Chilkat Classic ASP Downloads

Download Chilkat for Classic ASP

Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

set jws = Server.CreateObject("Chilkat.Jws")

'  Set the protected header for signer 0, specifying the signature algorithm (alg).
set header = Server.CreateObject("Chilkat.JsonObject")
success = header.UpdateString("alg","HS256")
success = jws.SetProtectedHeader(0,header)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( jws.LastErrorText) & "</pre>"
    Response.End
End If

'  Set the payload to be signed.
bIncludeBom = 0
success = jws.SetPayload("This is the content to sign.","utf-8",bIncludeBom)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( jws.LastErrorText) & "</pre>"
    Response.End
End If

'  Provide the HMAC key (base64) for signer 0.  In production, obtain the key from a secure source
'  rather than hard-coding it.
base64Key = "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU="
success = jws.SetMacKey(0,base64Key,"base64")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( jws.LastErrorText) & "</pre>"
    Response.End
End If

'  Create the JWS from the current payload, headers, and signing key.  The returned string is the
'  JWS (compact serialization by default).
jwsCompact = jws.CreateJws()
If (jws.LastMethodSuccess = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( jws.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( jwsCompact) & "</pre>"

%>
</body>
</html>