[Cryptech Tech] Introduction

Jason van Aardt jason at caperocket.com
Mon Feb 20 11:37:49 UTC 2017

Hi Fredrik,

Nice to meet you virtually, May I ask if there is perhaps a list of the
planned update/additions  for the next release of hardware?

What is the current performance if I may ask?
Is the FTDI connected USB2.0 UART interface the primary interface
currently? What is the throughput on the Serial side at the moment?

I can see that Tamper detection is a big topic to cover based on the
current hardware.

I see from the circuit diagram that the hardware tamper detection would be
related to both additional hardware(Tamperswitch on lid? possible tamper
Foil continuity circuitry?) as well as related code on the ATtiny, to wipe
the Master Keys stored on the 23K640-I/SN?
As well as the Keystore memory, 128 Mbit (N25Q128A13ESE*) ?

Need to look at "Zerorise" function in case of rapid erase via panic button
SW2, and a mechanical mechanism so that it is easy to zerorise, but not
easy to do inadvertently.

Are there currently counter measures implemented against side channel
attacks eg. differential power analysis?
Using variable clock rates, additional nondeterministic loops etc.

May I ask what is the best way to get a latest hardware release board?
Though the ordering at https://www.crowdsupply.com/cryptech/open-hardware-

Kind Regards

On Mon, Feb 20, 2017 at 11:56 AM, Fredrik Thulin <fredrik at thulin.net> wrote:

> On måndag 20 februari 2017 kl. 11:30:53 CET Jason van Aardt wrote:
> > Hello everyone,
> >
> > Leif has suggested that I introduce myself through the Tech list.
> >
> > My name is Jason van Aardt based in Capetown, I am an Embedded Hardware
> and
> > Firmware(VHDL) designer and have designed multiple HSM's over the last 10
> > years,
> >
> > I  have previously designed and architected an Express Card form factor
> > with tamper foil, Spartan 6 FPGA and Atmel ARM9 AT91SAM9261 with MIRACL
> > library achieving Gigabit per second thoughput symettric encryption.
> > I also architected a Layer 2 Gigabit ethernet link encryptor using this
> > HSM.
> >
> > I would like join and hope to make a contribution to the project, what
> > would be the best way to get involved?
> Cool, what do you want to do?
> Two suggestions would be to either look into increasing performance, or
> starting the process to add tamper detection (note how unspecified that
> statement is ;) ).
> /Fredrik

Kind Regards
*Jason van Aardt*

+27 794939762
Skype : Jason.vanaardt
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