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(DataFlex) Download and Trust the DigiCert Global Root CA

Demonstrates how to download a root certificate and trust it.

For more information, see https://www.digicert.com/digicert-root-certificates.htm

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    String sCertUrl
    Handle hoHttp
    Variant vBdCert
    Handle hoBdCert
    Boolean iSuccess
    Variant vCert
    Handle hoCert
    String sCertPath
    Handle hoTroots
    String sTemp1

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

    // In this example, the URLs for the DigiCert root CA certs are available at this web page:
    // https://www.digicert.com/digicert-root-certificates.htm

    // This example downloads the "DigiCert Global Root G3"
    // Valid until: 15/Jan/2038
    // Serial #: 05:55:56:BC:F2:5E:A4:35:35:C3:A4:0F:D5:AB:45:72
    // Thumbprint: 7E04DE896A3E666D00E687D33FFAD93BE83D349E

    Move "https://dl.cacerts.digicert.com/DigiCertGlobalRootG3.crt" To sCertUrl

    Get Create (RefClass(cComChilkatHttp)) To hoHttp
    If (Not(IsComObjectCreated(hoHttp))) Begin
        Send CreateComObject of hoHttp
    End
    Get Create (RefClass(cComChilkatBinData)) To hoBdCert
    If (Not(IsComObjectCreated(hoBdCert))) Begin
        Send CreateComObject of hoBdCert
    End
    Get pvComObject of hoBdCert to vBdCert
    Get ComDownloadBd Of hoHttp sCertUrl vBdCert To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoHttp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Load it into a Chilkat cert object.
    Get Create (RefClass(cComChilkatCert)) To hoCert
    If (Not(IsComObjectCreated(hoCert))) Begin
        Send CreateComObject of hoCert
    End
    Get pvComObject of hoBdCert to vBdCert
    Get ComLoadFromBd Of hoCert vBdCert To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoCert To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Examine the common name,serial, and thumbprint:
    Get ComSubjectCN Of hoCert To sTemp1
    Showln "CN: " sTemp1
    Get ComSerialNumber Of hoCert To sTemp1
    Showln "Serial: " sTemp1
    Get ComSha1Thumbprint Of hoCert To sTemp1
    Showln "Thumbprint: " sTemp1

    // Output from the above:
    // CN: DigiCert Global Root G3
    // Serial: 055556BCF25EA43535C3A40FD5AB4572
    // Thumbprint: 7E04DE896A3E666D00E687D33FFAD93BE83D349E

    // If desired, the certificate can be saved to a local file so it does not need
    // to be downloaded from the website every time.  
    Move "qa_data/certs/DigiCertGlobalRootG3.crt" To sCertPath
    Get ComWriteFile Of hoBdCert sCertPath To iSuccess

    // To load the cert from a file...
    Get ComLoadFromFile Of hoCert sCertPath To iSuccess

    // Do the following to add the cert to the collection of trusted roots
    // for this application.  (Note:  The trust is not persisted.  Each time the
    // application runs, it should load the cert (from whatever source, whether it is
    // a file, a database,etc.) and do the following:
    Get Create (RefClass(cComChilkatTrustedRoots)) To hoTroots
    If (Not(IsComObjectCreated(hoTroots))) Begin
        Send CreateComObject of hoTroots
    End

    Get pvComObject of hoCert to vCert
    Get ComAddCert Of hoTroots vCert To iSuccess
    Get ComActivate Of hoTroots To iSuccess

    Get ComSubjectCN Of hoCert To sTemp1
    Showln sTemp1 " is now trusted for this run of this application."


End_Procedure

 

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