(VBScript) Use a Custom Set of Trusted Root Certificates

Demonstrates how to build a set of trusted root certificates to be used globally by all Chilkat classes.

Note: This example requires Chilkat v11.0.0 or greater.

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)

success = 0

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

set trustedRoots = CreateObject("Chilkat.TrustedRoots")

'  Indicate that we will NOT trust any pre-installed certificates on the system.
trustedRoots.TrustSystemCaRoots = 0

' Thawte is a certificate authority that provides a .zip download of their
' root CA certificates:  https://www.thawte.com/roots/index.html
' The direct download link is: https://www.verisign.com/support/thawte-roots.zip
' Note: The above URLs are valid at the time of writing this example (29-May-2015).

' Assuming the .zip has already been downloaded, open it and load each .pem file into
' our trusted roots object.
set zip = CreateObject("Chilkat.Zip")

' Open a .zip containing PEM files, among other things..
success = zip.OpenZip("qa_data/certs/thawte-roots.zip")
If (success = 0) Then
    outFile.WriteLine(zip.LastErrorText)
    WScript.Quit
End If

set entry = CreateObject("Chilkat.ZipEntry")

set cert = CreateObject("Chilkat.Cert")

pattern = "*.pem"
bHasMoreEntries = zip.EntryMatching(pattern,entry)
Do While bHasMoreEntries = 1

    outFile.WriteLine("Entry: " & entry.FileName)

    ' Get the PEM of the CA cert:
    pemStr = entry.UnzipToString(0,"utf-8")

    ' Load it into a certificate object:
    success = cert.LoadPem(pemStr)
    If (success <> 1) Then
        outFile.WriteLine(cert.LastErrorText)
    End If

    ' Add it to the trusted roots.
    success = trustedRoots.AddCert(cert)

    bHasMoreEntries = entry.GetNextMatch(pattern)
Loop

'  Activate the trusted roots globally for all Chilkat objects.
'  This call really shouldn't fail, so we're not checking the return value.
success = trustedRoots.Activate()

outFile.Close