Re: [Ace] on signature verification times for sec192r1

[Somaraju Abhinav <[e-mail]>]

Hi Pascal,

Thanks for the information. Could you please explain what is nb_bloc_512bits?

Regards,
Abhinav

From: Ace [mailto:[e-mail]] On Behalf Of Pascal Urien
Sent: Sonntag, 24. Juli 2016 11:51
To: Michael StJohns <[e-mail]>
Cc: [e-mail]
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 <[e-mail]<mailto:[e-mail]>>:
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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