Classic ASP

Get Issuer Certificate Information

A certificate contains information about its issuer. This example demonstrates how to get the issuer information from a certificate.

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Classic ASP

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

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

success = cert.LoadFromFile("qa_data/certs/sample.cer")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( cert.LastErrorText) & "</pre>"
    Response.End
End If

' Get issuer information:

' -----------------------------------------------------------------------
' (Not all subject fields may exist depending on the issuer certificate.)
' -----------------------------------------------------------------------

' Issuer DN (Distinguished Name, i.e. all the Issuer subject parts)
Response.Write "<pre>" & Server.HTMLEncode( "DN: " & cert.IssuerDN) & "</pre>"

' Common Subject parts:
' Issuer Common Name
Response.Write "<pre>" & Server.HTMLEncode( "CN: " & cert.IssuerCN) & "</pre>"

' Issuer Country
Response.Write "<pre>" & Server.HTMLEncode( "C: " & cert.IssuerC) & "</pre>"

' Issuer Email address
Response.Write "<pre>" & Server.HTMLEncode( "E: " & cert.IssuerE) & "</pre>"

' Issuer Locality
Response.Write "<pre>" & Server.HTMLEncode( "L: " & cert.IssuerL) & "</pre>"

' Issuer Organization
Response.Write "<pre>" & Server.HTMLEncode( "O: " & cert.IssuerO) & "</pre>"

' Issuer Organizational Unit
Response.Write "<pre>" & Server.HTMLEncode( "OU: " & cert.IssuerOU) & "</pre>"

' Issuer State
Response.Write "<pre>" & Server.HTMLEncode( "S: " & cert.IssuerS) & "</pre>"

%>
</body>
</html>