mcarrickscott
commented
1 year ago Clearly what you are doing makes little sense - why do a finite field powmod in the middle of some elliptic curve calculations?
The reason for this causing a problem is that each MIRACL instance uses a global internal modulus. See the main miracl structure in miracl.h
/* Montgomery constants */mr_small ndash; big modulus; big pR; BOOL ACTIVE; BOOL MONTY;
The call to powmod internally changes this modulus, causing the wrong modulus to be used subsequently.
So the solution is - just don't do it..
Mike
On Thu, Apr 6, 2023 at 5:15 AM Jiaqi Yang @.***> wrote:
I just started using miracl to implement ECC, as shown in the picture, why do I get the wrong G after executing pow()? [image: 1680754483001] https://user-images.githubusercontent.com/41739439/230270545-3a7a01af-6ff7-4712-bd3b-ebcf5c67e448.jpg [image: image] https://user-images.githubusercontent.com/41739439/230270585-6fdf6faa-e2e7-4445-a1a9-4509674dfe1a.png
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I just started using miracl to implement ECC, as shown in the picture, why do I get the wrong G after executing powmod()?
