request for help asap about micro-ecc HOT 3 CLOSED

Make sure you are using the correct uECC_WORD_SIZE (I assume 4). Other than
that, you will need to implement operations for your processor to improve
performance. I don't know anything about the Cortus processor. If they are
ARM-based then you can just use the existing ARM assembly implementation
(define uECC_PLATFORM to uECC_arm). Otherwise you will need to implement
the assembly implementation yourself.

On Mon, Apr 6, 2015 at 1:06 AM, azahido [email protected] wrote:

Hello,
please, I come back to you Mr. I lost in optimization to run the mico-ecc
in my environment, the issue when I run the ecc- signature generation it
took more 19 seconds please, I lost more time (more than 4 months) to have
results as you found less than 2 seconds.
I am working on "cortus aps 32 bits as platform". please I want to
understand how you got the very good answers time results, I don't know If
I need to write the assembly for the function that take time in
calculation, if needed please help me.
Please, I would be very grateful if you could help me asap to resolved
this issue.
Thank you so much

—
Reply to this email directly or view it on GitHub
https://github.com/kmackay/micro-ecc/issues/26.

from micro-ecc.

please, when which step I can use the ARM-Assembly could you help me by
explaining the steep to use existing assembly

On Mon, Apr 6, 2015 at 9:10 PM, Ken MacKay [email protected] wrote:

Make sure you are using the correct uECC_WORD_SIZE (I assume 4). Other than
that, you will need to implement operations for your processor to improve
performance. I don't know anything about the Cortus processor. If they are
ARM-based then you can just use the existing ARM assembly implementation
(define uECC_PLATFORM to uECC_arm). Otherwise you will need to implement
the assembly implementation yourself.

On Mon, Apr 6, 2015 at 1:06 AM, azahido [email protected] wrote:

Hello,
please, I come back to you Mr. I lost in optimization to run the mico-ecc
in my environment, the issue when I run the ecc- signature generation it
took more 19 seconds please, I lost more time (more than 4 months) to
have
results as you found less than 2 seconds.
I am working on "cortus aps 32 bits as platform". please I want to
understand how you got the very good answers time results, I don't know
If
I need to write the assembly for the function that take time in
calculation, if needed please help me.
Please, I would be very grateful if you could help me asap to resolved
this issue.
Thank you so much

—
Reply to this email directly or view it on GitHub
https://github.com/kmackay/micro-ecc/issues/26.

—
Reply to this email directly or view it on GitHub
https://github.com/kmackay/micro-ecc/issues/26#issuecomment-90245526.

ZAHID Ahmed
Hardware and Software Design Engineer
MU-Electronics Rabat-Morocco
Tel: +212670157725
Email: [email protected] [email protected]

•       [email protected] [email protected]*
  

''Where others see limitations, we see possibilities''

from micro-ecc.

Apparently Cortus chips are not ARM-based, they use their own instruction set. This means that you will not be able to use my existing ARM assembly implementation. You will need to write your own implementation. I also wasn't able to find any documentation on the Cortus instruction set, so you're on your own there.

I recommend starting with the vli_add() and vli_sub() since they are pretty simple and you should see a measurable performance increase. For fast multiplication (vli_mult() and vli_square()), see http://www.iacr.org/archive/ches2011/69170459/69170459.pdf

from micro-ecc.