Find Certificate Expiration Date / Time

ASP script to show the time validity of a certificate, and the valid-from and valid-to dates.

<html>
<head>
<title>Determine if a certificate is expired</title>
</head>
<body>
<%
' Get an object to create a certificate store object
set ccs = Server.CreateObject("Chilkat.CreateCS")

' Open the local machine certificate store.
set certStore = ccs.OpenLocalSystemStore()

' Iterate over the certificates
for i = 0 to certStore.NumCertificates - 1

	set cert = certStore.GetCertificate(i)
	
	' Show the name of the certificate and whether it is  expired.
	Response.write cert.SubjectCN & ": "
	if cert.IsExpired() = 1 then
		Response.Write "EXPIRED"
	else
		Response.Write "Not Expired"
	end if
	Response.Write ", Valid from " & cert.ValidFrom & " to " & cert.ValidTo
	Response.Write "<br><br>"
	
next


%>
</body>
</html>