(VBScript) Load Base64-encoded X.509 Certificate (.cer)

Loads a digital certificate from a base64 encoded DER X.509 Certificate (.cer, .crt) and fetches information about the cert.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Cert")
set cert = CreateObject("Chilkat.Cert")

' LoadFromFile will load virtually any certificate format file.
' It will auto-recognize the format and load appropiately.
' A base64-encoded DER X.509 certificate file
' contains the binary DER in base64 encoded form.
' Therefore, it is a text file that will begin like this:
' -----BEGIN CERTIFICATE-----
' MIIFbjCCBFagAwIBAgIGdDPNv/L0MA0GCSqGSIb3DQEBBQUAMIHKMQswCQYDVQQG
' EwJVUzEQMA4GA1UECBMHQXJpem9uYTETMBEGA1UEBxMKU2NvdHRzZGFsZTEaMBgG
' ...

success = cert.LoadFromFile("/Users/chilkat/testData/cer/chilkat_base64.cer")
If (success <> 1) Then
    outFile.WriteLine(cert.LastErrorText)
    WScript.Quit
End If

' DN = "Distinguished Name"
outFile.WriteLine("SubjectDN:" & cert.SubjectDN)

outFile.WriteLine("Common Name:" & cert.SubjectCN)
outFile.WriteLine("Issuer Common Name:" & cert.IssuerCN)

outFile.WriteLine("Serial Number:" & cert.SerialNumber)

outFile.Close