(PureBasic) 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:

• SetSslClientCert
• SetSslClientPem
• SetSslClientPfx

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.

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IncludeFile "CkHttp.pb"

Procedure ChilkatExample()

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

    http.i = CkHttp::ckCreate()
    If http.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; Set the certificate to be used for mutual TLS authentication
    ; (i.e. sets the client-side certificate for two-way TLS authentication)
    success.i = CkHttp::ckSetSslClientCertPfx(http,"/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx","pfxPassword")
    If success <> 1
        Debug CkHttp::ckLastErrorText(http)
        CkHttp::ckDispose(http)
        ProcedureReturn
    EndIf

    ; 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


    CkHttp::ckDispose(http)


    ProcedureReturn
EndProcedure