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(Excel) HTTP TLS Mutual Authentication (Client-Side Certificate)
This example demonstrates what to do when a TLS connection requires a client-side certificate, also known as "two-way authentication" or "mutual authentication". The Chilkat API provides a few standard methods for setting the client-side certificate:
These methods are present in any Chilkat class that has SSL/TLS functionality. When the SSL client cert is set via one of these methods, it tells the API to use it for two-way (i.e. mutual) authentication. In all possible tasks, whether it is a POST, GET, PUT, an Amazon S3 method, etc., the only thing required for implementing the two-way authentication is to make a successful call to one of the above SetSsl* methods.
Dim http As Chilkat.Http Set http = Chilkat.NewHttp Dim success As Boolean ' Any string unlocks the component for the 1st 30-days. success = http.UnlockComponent("Anything for 30-day trial") If (success <> True) Then Debug.Print http.LastErrorText Exit Sub 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.SetSslClientCertPfx("/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx","pfxPassword") If (success <> True) Then Debug.Print http.LastErrorText Exit Sub End If ' Note: The certificate used for the client-side of TLS mutual authentication ' must have the associated private key available. (PFX files typically store both ' the certificate and associated private key.) ' At this point, the HTTP object is setup with the client-side cert, and any SSL/TLS ' connection will automatically use it if the server demands a client-side cert.
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