Get wrong value of epoint* G when after runing powmod()

[beiluoshimeng]

I just started using miracl to implement ECC, as shown in the picture, why do I get the wrong G after executing powmod()?

[mcarrickscott]

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

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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> — Reply to this email directly, view it on GitHub <#115>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAU3ZDXUJ6PZ4H5SIHA4B7LW7Y7OJANCNFSM6AAAAAAWU4IE3M> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>