[Cryptography] The Crypto Pi
Marcus D. Leech
mleech at ripnet.com
Mon Jan 12 22:53:03 EST 2015
On 01/12/2015 10:32 PM, Bill Frantz wrote:
> I have both boards, and I can think of advantages for both of them.
> When Both are based on "Systems on a Chip" (SOC), which have the CPU,
> memory, and all the controllers on one chip. I think they were both
> designed for set top boxes.
> I went to get the hardware manual for the Broadcom based Raspberry PI,
> their web site said, "Contact our sales department." When I went to
> the Texas Instruments site for the Beaglebone, I downloaded an almost
> 5000 page PDF.
> As for hardware Trojans, I think your attacker here is more likely to
> be the MPAA than the NSA, but I certainly could be wrong.
> Cheers - Bill
Newer GPU cards for the X86 world have little TEEs tucked into the
corner to do MPAAs bidding, in a sense. It allows you to do "secure"
decrypt+decode right on the graphics card, with just enough obscure
dancing-about to make it "difficult" to be attacked by the legit owner of
the hardware--the decrypted stream never appears in the PC memory
space, where it's easiest to siphon.
I worked on software related to that nonsense at my current company, but
never actually laid my hands on the hardware. The "industry" calls this
Anyway, I have no idea if ARM SOC graphics/GPU subsystems have adopted a
similar model or not. And many models of ARM have a TEE built in to
them, which nearly-nobody takes any advantage of.
Also, with the introduction of the Odroid C1, the rPI has a very-serious
competitor at the $35.00 price range. I have a trio of them at the moment,
and they're quite nice.
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