Classic ASP

Get Text Certificate Extensions by OID

Demonstrates how to get text certificate extensions by OID. In this example, we have a certificate with the following OID extensions: 1.3.6.1.4.1.49952.5.8.5, 1.3.6.1.4.1.49952.5.8.6, 1.3.6.1.4.1.49952.5.8.7.

Most certificate extensions have values that are ASN.1 (binary). For the majority of cases, an application should call GetExtensionAsXml. For extensions known to have text values (such as the OIDs listed above), an application can instead call GetExtensionAsText.

The GetExtensionAsText method is added in Chilkat v9.5.0.89.

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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/PUH9.cer")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( cert.LastErrorText) & "</pre>"
    Response.End
End If

oid = "1.3.6.1.4.1.49952.5.8.5"
str = cert.GetExtensionAsText(oid)
If (cert.LastMethodSuccess = 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( oid & ": " & str) & "</pre>"
End If

oid = "1.3.6.1.4.1.49952.5.8.6"
str = cert.GetExtensionAsText(oid)
If (cert.LastMethodSuccess = 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( oid & ": " & str) & "</pre>"
End If

oid = "1.3.6.1.4.1.49952.5.8.7"
str = cert.GetExtensionAsText(oid)
If (cert.LastMethodSuccess = 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( oid & ": " & str) & "</pre>"
End If


%>
</body>
</html>