4 commits

Author	SHA1	Message	Date
Luke Parker	5da1b4fcf8	Prepare multiexp for publishing	2022-06-19 06:35:45 -04:00
Luke Parker	e0ce6e5c12	Add Ed25519 to FROST and remove expand_xmd for elliptic_curve's ... Doesn't fully utilize ec's hash2curve module as k256 Scalar doesn't have FromOkm for some reason. The previously present bigint reduction is preserved. Updates ff/group to 0.12. Premised on https://github.com/cfrg/draft-irtf-cfrg-frost/pull/205 being merged, as while this Ed25519 is vector compliant, it's technically not spec compliant due to that conflict.	2022-06-06 02:18:25 -04:00
Luke Parker	c90e957e6a	Add a batch verifier to multiexp, along with constant time variants ... Saves ~8% during FROST key gen, even with dropping a vartime for a constant time (as needed to be secure), as the new batch verifier is used where batch verification previously wasn't. The new multiexp API itself also offered a very slight performance boost, which may solely be a measurement error. Handles most of https://github.com/serai-dex/serai/issues/10. The blame function isn't binary searched nor randomly sorted yet.	2022-05-27 00:52:44 -04:00
Luke Parker	56fc39fff5	Fix https://github.com/serai-dex/serai/issues/5	2022-05-03 07:42:09 -04:00