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Re: LPC FLASH security (CRP) broken?

2005-12-22 by jayasooriah

Dear Robert,

Could you also confirm you have no options to read a CRP enabled
device on your tester?

The gripe here is that client requirements are quite clear.  The
client will not use a part unless the manufactur guarantees there are
no (known) hidden or undisclosed methods tha the manufacture has
chosen not to disclose that the "enemy" can use to read locked down code.

The client did not say this explicitly, but it my guess that this
client thinks that if Philips chose not to disclose LPC flash
programming algorithm, it may well likewise chose not to disclose
methods or open holes in in the implementation that defeat CRP.

I know the client is happy with protection oferred in AVR device, and
is looking to LPC for other requirements, but the trust component is
not there yet in relation to Philips.

For this reason, I would suggest Philips put effort on this front in
relation to CRP feature if it wants LPC parts to be used in the same
league as AVR parts.

Regards,

Jaya

--- In lpc2000@yahoogroups.com, "philips_apps" <philips_apps@y...> wrote:
>
> Mauricio,
> 
> with IAP calls you can not erase the bootloader, it protects itself 
> as it knows where it is located.
> 
> I can assure you we have an options to program the virgin device on 
> a tester.
> 
> Regards, Robert

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