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dear group I am developing a standalone application with a 'C5402 DSP and a Flash memory module. How can I protect my code and inhibit other parties from extracting the code from the DSP or flash module? The section on Security Options in the Official Data Sheet of the C54x devices is very vague on this subject. Rgds Jean Viljoen Development Engineer Azoteq (Pty) Ltd Tel: +27 21 863 0033 Fax: +27 21 863 1512 |
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Security Option on 'C5402
Started by ●September 2, 2002
Reply by ●September 3, 20022002-09-03
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Hello Jean, This is an active discussion topic. There are some good threads on this on comp.dsp newsgorup < http://groups.google.com/groups?hl=en&lr=&ie=ISO-8859-1&q=Code+security+group%3A\ comp.dsp >. Look at search result no. 3. IMHO, there is no perfect method to do this. Your method is only secure if the person trying to hack your code doesnot know about it. Best Regards, Sachin Gupta -- Sr Software Engineer-DSP Hughes Software Systems Jean Viljoen <> on 09/02/2002 04:07:29 PM To: "'C54x DSP Discussion Group'" <> cc: (bcc: Sachin Gupta/HSS) Subject: [c54x] Security Option on 'C5402 dear group I am developing a standalone application with a 'C5402 DSP and a Flash memory module. How can I protect my code and inhibit other parties from extracting the code from the DSP or flash module? The section on Security Options in the Official Data Sheet of the C54x devices is very vague on this subject. Rgds Jean Viljoen Development Engineer Azoteq (Pty) Ltd Tel: +27 21 863 0033 Fax: +27 21 863 1512 |
Reply by ●September 3, 20022002-09-03
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Hello Jean. Usually, I'm in favor of open source and information sharing, but I do realize that our employers may not agree... Anyhow, just for my own curiosity: Is there any way to stop JTAG debugging on a 54x's? Because if that is impossible, then any user of the system can see anything that the DSP sees. That means no security at all, if the user has access to the DSP's pins. Anyhow, in my opinion, the only way to protect your code reasonably is to use Epoxy or some other glue/plastic material. Simply make sure that the only way to reach the electronics is to break it into small pieces. Think chemical and mechanical. And be careful with the wires you let out to the open air. If I'm not wrong, McBSP lines can be used to boot up the processor, and if someone manages to boot your processor up with his or her own software, the game is over. I don't say that this is 100% protection, but at least it eliminates the possibility of some wizkid doing the job. Eli |
