Practical Embedded Security by Stapko Timothy

Author:Stapko, Timothy [Stapko, Timothy]
Language: eng
Format: epub
ISBN: 978-0-08-055131-9
Publisher: Elsevier Science
Published: 2008-03-14T16:00:00+00:00

RULE #5: Simple is better.

As has been mentioned before, simplicity makes an application easier to understand, and therefore easier to make secure. Don’t overcomplicate your application with lots of extra protocols and features. List the requirements of the application and cut out any that are not absolutely necessary. Being an embedded systems designer, you should already be doing this, so this is a very complementary operation. Keep the feature set down, and you will have a smaller application. Having a smaller application means you can study it more and make it more robust and secure. Avoid feature creep at all costs as well. If new features are being added or old features are being expanded as development continues, you are introducing a delta to your existing code base that makes it even more difficult to analyze what you have done. On top of that, the extra time taken up by implementing the new features could have been used for tightening up what you had already implemented.

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