SSL/TLS Client Certificate

PROGRAM DESCRIPTION: SSL Client Certificate Example

This example demonstrates:

1. How SSL Client connections can be made.
2. How to load and use Client Certificates.
3. This example will only work if you are connecting to a SSL server that is configured to request and receive client certificates. In this example the client certificate is compiled as part of the application.

The application will attempt to connect to the specified SSL Server and keep track of the number successful and failed attempts. Status messages will be sent to both the SSL Server, and to the serial debug serial port on the NetBurner device.

IMPORTANT: A Client Certificate is a very different thing than when a client checks a server certificate against a list of Certificate Authorities (CA):

Certificate Checking against a CA: In this mode the Client will check the CA portion of the server certificate against a list of CA's maintained by the client. If the CA's match, the connection is allowed. This mode requires a modification to predef.h to enable client certificate checking. This is NOTthe purpose of this example application.

Sending a Client Certificate to the Server: In this mode, in addition to the server sending a certificate to the client as in the above case, the client is required to send a certificate to the server. That is the purpose of this example application.

CREATING A CERTIFICATE AND CA: Please refer to the NetBurner Security Library documentation for a detailed description. For the convenient of this example, we have created one for you.