Re: [Ace] on signature verification times for sec192r1

Hi Abhinav

The extra time (2ms/bloc)  comes from the hash procedure (sha1 in the
example) that works with 64 bytes blocs

Rgs

Pascal

2016-07-25 12:04 GMT+02:00 Somaraju Abhinav <abhinav.somaraju@tridonic.com>:

> Hi Pascal,
>
>
>
> Thanks for the information. Could you please explain what is
> nb_bloc_512bits?
>
>
>
> Regards,
>
> Abhinav
>
>
>
> *From:* Ace [mailto:ace-bounces@ietf.org] *On Behalf Of *Pascal Urien
> *Sent:* Sonntag, 24. Juli 2016 11:51
> *To:* Michael StJohns <mstjohns@comcast.net>
> *Cc:* ace@ietf.org
> *Subject:* Re: [Ace] on signature verification times for sec192r1
>
>
>
> I fully agree...
>
>
>
> J3A081M  can be found at 10$ over the WEB
>
>
>
> Futhermore this class of cheap device can process TLS or DTLS as
> illustrated in
>
>
>
> https://tools.ietf.org/html/draft-urien-uta-tls-dtls-security-module-00
>
>
>
> They could be used for numerous applications in the IoT
>
>
>
> Rgs
>
>
>
> Pascal
>
>
>
>
>
> 2016-07-23 23:59 GMT+02:00 Michael StJohns <mstjohns@comcast.net>:
>
> On 7/23/2016 11:10 AM, Pascal Urien wrote:
>
> Hi All
>
>
>
> J3A081M is a javacard device from NXP
>
>
>
> The micocontroller should be the P5CD081V1A, which comprises a crypto
> processor
>
>
> There's a number of these from a number of vendors.  I'd actually look at
> the A7xxx series of chips as they're designed to be embeddable.  I've
> become a big fan of javacard style solutions over the years.
>
> In any event, the number of relatively inexpensive public key crypto
> accelerator chips (e.g. googl for "secure authentication chips") is greater
> than zero and continues to climb.  And for not a lot of money.  Estimating
> what from prices on Digikey, I'd think something less than $.50 for
> Quantity large as of today and half that or less in 1-2 years as its gets
> bundled into the "Swiss Army Knife" style of process (e.g. support for
> wireless 900mhz plus ... plus ... plus ... plus security...) (google for
> iot module secure element 900mhz for example).
>
> Later, Mike
>
>
>
>
>
>
> The performances with the curve secp192r1 are the following (for ECDSA +
> SHA1)
>
>
>
> Sign    = 40ms +  nb_bloc_512bits x 3.5 ms
>
> Verify  = 60ms  + nb_bloc_512bits x 3,5 ms
>
>
>
>
>
> By the way this chip has enough crypto ressouces for processing TLS or DTLS
>
>
>
> Rgs
>
>
>
> Pascal
>
>
>
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