[Cerowrt-devel] [Make-wifi-fast] [bufferbloat-fcc-discuss] arstechnica confirmstp-link router lockdown

[dpreed at reed.com]

There are many processor architectures that have different instruction memories for different functional units. 

SoCs often have multiple functional units on the same die. For radios that allows for a pipeline. You can limit what an EPROM will accept with a crypto signature.

This is common stuff.

-----Original Message-----
From: "David Lang" <david at lang.hm>
Sent: Mon, Mar 14, 2016 at 3:04 pm
To: dpreed at reed.com
Cc: "Wayne Workman" <wayne.workman2012 at gmail.com>, "bufferbloat-fcc-discuss" <bufferbloat-fcc-discuss at lists.redbarn.org>, cerowrt-devel at lists.bufferbloat.net, make-wifi-fast at lists.bufferbloat.net
Subject: Re: [Make-wifi-fast] [bufferbloat-fcc-discuss] [Cerowrt-devel]arstechnica confirmstp-link router lockdown

On Mon, 14 Mar 2016, dpreed at reed.com wrote:

> An external "limit-exceeding signal detector" could also be very inexpensive, 
> if it did not need to do ADC from the transmitted signal, but could get access 
> to the digital samples and do a simple power measurement.

I agree with this, but have concerns about how you can lock down part of the 
firmware and not all of it.

You still have the problem of telling the chip/algorithm which set of rules to 
enforce, and updating it when the requirements change.

David Lang