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Thread: Unable to connect with C# to Homeworks processor with certificates

  1. #1

    Unable to connect with C# to Homeworks processor with certificates

    I'm trying to connect to Homeworks processor using a C# program in .NET Framework:

    X509Certificate2Collection certificates = new X509Certificate2Collection();
    string serverName = "IP OF THE PROCESSOR";


    certificates.Add(new X509Certificate2(_certPath, "PASSWORD", X509KeyStorageFlags.DefaultKeySet));

    ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
    ServicePointManager.ServerCertificateValidationCal lback = RemoteCertificateValidationCallback;

    _client = new TcpClient(_ip, _port);
    _sslStream = new SslStream(_client.GetStream(), true, RemoteCertificateValidationCallback, LocalCertificateSelectionCallback);

    _sslStream.AuthenticateAsClient(serverName, certificates, SslProtocols.Tls12, false);

    The AuthenticateAsClient function return the "Unknown error during certificate elaboration" and I don't know what I'm doing wrong. Using authentication with username and password the connection works.
    The error is generic and I don't understand what can be the error.

    The same certificates used to produce the pfx work with openssl connection.

    Does anyone have a suggestion?

    Thanks in advance

  2. #2
    Senior Member
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    Oct 2013
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    Convergence Technologies Raleigh, North Carolina

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