3 Commits

Author SHA1 Message Date
Frank Denis
2d11967734
p256: properly handle neutral element & add AffineCoordinates struct (#8718)
Instead of multiple references to an anonymous structure to represent affine coordinates, add an actual `AffineCoordinates` structure.

Also properly handle the neutral element during coordinate conversion and fix mixed addition.

And comptime the small precomputation table for basepoint multiplication.
2021-05-09 18:20:43 +02:00
Veikka Tuominen
fd77f2cfed std: update usage of std.testing 2021-05-08 15:15:30 +03:00
Frank Denis
fe8781357a
std.crypto: add support for the NIST P-256 curve (#8627)
Uses verified code generated by fiat-crypto for field arithmetic, and complete formulas to avoid side channels.

There's still plenty of room for optimizations, especially with a fixed base. But this gives us a framework to easily add other similar curves.
2021-05-01 08:14:32 +02:00