(Xojo Plugin) Get Text Certificate Extensions by OID

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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.

Chilkat Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

Dim cert As New Chilkat.Cert

Dim success As Boolean
success = cert.LoadFromFile("qa_data/certs/PUH9.cer")
If (success = False) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

Dim oid As String
oid = "1.3.6.1.4.1.49952.5.8.5"
Dim str As String
str = cert.GetExtensionAsText(oid)
If (cert.LastMethodSuccess = True) Then
    System.DebugLog(oid + ": " + str)
End If

oid = "1.3.6.1.4.1.49952.5.8.6"
str = cert.GetExtensionAsText(oid)
If (cert.LastMethodSuccess = True) Then
    System.DebugLog(oid + ": " + str)
End If

oid = "1.3.6.1.4.1.49952.5.8.7"
str = cert.GetExtensionAsText(oid)
If (cert.LastMethodSuccess = True) Then
    System.DebugLog(oid + ": " + str)
End If