CC3100 SSL Demo Application

Overview

This is a sample application demonstrating how to use the certificate files and establish an SSL connection w/ CC3100. SSL certificates are designed to provide two principles, privacy and authentication. Privacy is achieved by encryption/decryption and authentication is achieved by signature/verification. The certificates must be pre-loaded to the serial-flash. It is possible to flash 5 sets of SSL certificates to the device using the CCS UniFlash utility.

Note: This wiki page is only applicable for CC3100-SDK v1.0.0 and upward releases. For documentation on older SDKs' examples, refer corresponding file in <cc3100-sdk-installation-location>\cc3100-sdk\docs\examples\

Application details

The application:

• connects to an open AP
• gets the server name via a DNS request
• defines all socket options and points to the CA certificate
• connects to the server via TCP

Usage

Prerequisite: This application requires an access-point with internet connectivity

• Connect the board to a Windows-PC and configure the terminal-program for seeing the logs - CC3100 & CC3200 Terminal Setting has detailed instructions for configuring the terminal-program
• Download the required certificate file at /cert/google.der on sFLASH using CCS UniFlash utility. For detailed instructions refer to the Uniflash User's Guide in addition to the CA Certificate section of the CC3200 wiki page
• Edit 'sl_common.h' and update the following parameters for the device to establish connection w/ the access-point

   #define SSID_NAME       "<ap_name>"
   #define SEC_TYPE        <security-type>
   #define PASSKEY         ""

• Edit 'sl_common.h' and update the following parameters to update the device time

   #define DATE                24
   #define MONTH               7
   #define YEAR                2014
   #define HOUR                17
   #define MINUTE              30
   #define SECOND              0

• Build and launch the project
• Application will connect to Google server
• See the self explanatory logs on the terminal-program's console. On success, below message will be displayed on the terminal

Limitations/Known Issues

• SSL certificates must be pre-loaded to the serial flash
• SSL certificates are not encrypted
• SSL certificates should use .der format
• Only 5 sets of SSL certificates can be used concurrently

Links

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