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.

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

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