emill / p256-cortex-m4 Goto Github PK

Hi Emill,

I've been studying your implementation and was wondering what the exact method is called with which you perform the multiplication in the first part of P256_mulmod. I've been looking at some papers explaining different methods (e.g. operand/product/hybrid scanning) but I can't seem to find the method you are using. It seems like you are performing a hybrid between the operand and product method, since you are first performing multiplication of the lower 4 words of B with all the words of A, and then continuing with the other words in B and doing the same. Do you have a reference (or name) for it?

Thanks in advance!

Hi @Emill, I've just come across your work on optimized implementations of ECC for Arm. First of all, thanks a lot for that, it looks amazing.

Would you be interested in porting your code to Cortex-M55, leveraging the Cortex-M Vector Extensions (MVE)? If so, please drop me a mail, and I can provide you with some more information and setup instructions for the necessary tooling.

Hi Emill,
Amazing work ! The performance is insane.
Sorry if my question is absurd, how can i change the curve for using SECP256K1 ?
Many thanks !