(Classic ASP) DKIM Signature using Windows Current User Certificate Store

This is a Windows-specific example to load a certificate from the Current User (registry-based) certificate store, and then use the certificate's associated private key for a DKIM signature.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

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

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

set cert = Server.CreateObject("Chilkat.Cert")

' The LoadByCommonName method searches the Windows Local Machine and Current User 
' registry-based certificate stores for a certificate having the common name specified. 
' If found, the certificate is loaded and ready for use.
success = cert.LoadByCommonName("My Certificate ABC")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( cert.LastErrorText) & "</pre>"
    Response.End
End If

' The certificate must have an associated private key installed, and it must be a
' private key that has been marked "exportable" when it was originally installed.
If (Not cert.HasPrivateKey()) Then
    Response.Write "<pre>" & Server.HTMLEncode( "This certificate does not have a private key available.") & "</pre>"
    Response.End
End If

set privKey = Server.CreateObject("Chilkat.PrivateKey")
success = cert.GetPrivateKey(privKey)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( cert.LastErrorText) & "</pre>"
    Response.End
End If

set dkim = Server.CreateObject("Chilkat.Dkim")

' Load the private key into the DKIM object:
success = dkim.SetDkimPrivateKey(privKey)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( dkim.LastErrorText) & "</pre>"
    Response.End
End If

' The private key has been loaded into the DKIM object.  See the other DKIM
' examples for guidance on how to create a DKIM signature...

%>
</body>
</html>