Xojo Plugin

Use Installed Cert on Windows for TLS Client Authentication

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Demonstrates how to use a certificate that has already been installed on a Windows PC for TLS client authentication. Xojo Plugin

Dim success As Boolean
success = False

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

Dim http As New Chilkat.Http

// On Windows, a pre-installed certificate can be loaded in a number of different ways.
// This example loads by the common name:
Dim cert As New Chilkat.Cert
success = cert.LoadByCommonName("My ECA Medium Assurance Identity Certificate")
If (success <> True) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

// Make sure this certificate has a private key available.  
// It should be a private key such that when the certificate was installed, it was marked as "exportable"
// so that authorized programs are able to access the private key.
If (cert.HasPrivateKey() <> True) Then
    System.DebugLog("A private key is needed for TLS client authentication.")
    System.DebugLog("This certificate has no private key.")
    Return
End If

// Set the certificate to be used for mutual TLS authentication
// (i.e. sets the client-side certificate for two-way TLS authentication)
success = http.SetSslClientCert(cert)
If (success <> True) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

// At this point, the HTTP object instance is setup with the client-side cert, and any SSL/TLS
// connection will automatically use it if the server demands a client-side cert.