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security of code

security of code

2006-04-16 by anantha janardhan

Please let me know the security of source code in
LPC2000? Is ther any lock bits like in 8051
controller?

janardhan

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Re: security of code

2006-04-16 by Danish Ali

This sort of thing is well documented, but you will have to read both
the data sheet and the user manual to find out.
My understanding:
LPC2104/2105/2106 - no protection
All others - With a certain "protect" pattern in Flash, external reading
(and external debugging) is disabled. All an attacker is allowed
to do is fully erase the entire device.

There has been quite a bit of discussion about theoretical attacks
to this protection. If you search the message archives you will
see a lot of hot air. I don't know if anyone has/can break the
protection.

Hope this helps,
Danish
--- In lpc2000@yahoogroups.com, anantha janardhan <janardhan11@...> wrote:
Show quoted textHide quoted text
>
> 
> 
> Please let me know the security of source code in
> LPC2000? Is ther any lock bits like in 8051
> controller?
> 
> janardhan

Re: security of code

2006-04-16 by Danish Ali

I just re-read your question.
The _source code_ is never inside the LPC2xxx. So that's safe even
if you don't bother to set the protect pattern ;-)
But I guess you meant the security of the object code
 - Danish
--- In lpc2000@yahoogroups.com, anantha janardhan <janardhan11@> wrote:
Show quoted textHide quoted text
>
> 
> 
> Please let me know the security of source code in
> LPC2000? Is ther any lock bits like in 8051
> controller?
> 
> janardhan

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