SEGGER emSSL

Getting Started

Browsing Websites with emSSL

Open a command line window on Windows and navigate to the Browser directory that contains the Browser.exe application. Once there, run Browser.exe and you should see something similar to this:

bash

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The browser opened a secure connection to the www.segger.com website on port 443 (the HTTPS port) and retrieved the HTML associated with the home page. It then processed the HTML markup to format the output nicely. The browser will work on any website that can support an HTTPS connection, but graphic-rich websites have a poor textual browsing experience.

Serving Webpages with emSSL

Now open up a second command line window, navigate to the WebServer directory and run the WebServer.exe application. It is likely that you will see a dialog asking you to grant the web server application access to the network, which you should do. You should now see something like:

The web server application is waiting for somebody to connect to it such that it can serve its small web page. Now we will connect emSSL to emSSL over a TLS connection — we are going to browse the website served by the WebServer application by using the Browser application. Back in the first window, type "browser 127.0.0.1:1234", the IP address of the local web server and the port it will serve on, a

This shows that both sides of the TLS connection are working correctly and the cipher suite that was agreed between them, RSA-AES-256-GCM-WITH-SHA-384 in this case, is the same on both sides

To prove that this is no accident, you can point a standard web browser, such as Firefox or Chrome, to the local web server. Open your web browser and enter the URL "https://127.0.0.1:1234/index.html" into the address bar. You should now be greeted by a notification from the browser that the certificate presented is invalid — and it is, according to the browser, because you are browsing your own PC using a self-signed certificate rather than a fully-authenticated certificate for a website on the Internet. Accept the certificate or click "Advanced" and "Proceed to 127.0.0.1" and you should be greeted with a short web page served by emSSL on your PC.

Internet Explorer has some difficulties with locally-hosted websites serving what it thinks are invalid certificates, so it is better to use Chrome or Firefox in this case.

Buyer's Guide

The emSSL Package

emSSL is a complete software package, designed for embedded systems and comes with everything which is needed to secure communication.

It includes all modules which implement the required functionality to use SSL. They are provided in source code, to allow complete control of the code that is used in the product and create transparency to avoid worries about possible back doors or weakness in code, which cannot be checked in precompiled libraries. emSSL comes with a simple, yet powerful API to make using emSSL in your product as easy as possible.

It also includes sample applications in binary and source code, which demonstrate how and when emSSL can be used in real life scenarios. For a list of included applications, see the chapters below.

Included Applications

emSSL Tools for Evaluation

emSSL includes sample utilities and tools to show how to use emSSL. 
The sample applications are available as executables for evaluation upon request.