Forums

security of code

Started by anantha janardhan April 16, 2006
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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An Engineer's Guide to the LPC2100 Series

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 l..., anantha janardhan wrote:
>
> Please let me know the security of source code in
> LPC2000? Is ther any lock bits like in 8051
> controller?
>
> janardhan
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 l..., anantha janardhan wrote:
>
> Please let me know the security of source code in
> LPC2000? Is ther any lock bits like in 8051
> controller?
>
> janardhan