pasta_curves-source/CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Rust's notion of Semantic Versioning.

[Unreleased]

Added

• Add repr-c cargo feature to facilitate FFI by conditionally adding repr(C) attribute to point structures.

Changed

• Add repr(transparent) attribute to Fp/Fq structures.
• Omit 'infinity' field from affine coordinates structures and use (0, 0) to denote the identity points.

[0.3.0] - 2022-01-03

Added

• Support for no-std builds, via two new (default-enabled) feature flags:
  • alloc enables the pasta_curves::arithmetic::{CurveAffine, CurveExt} traits, as well as implementations of traits like group::WnafGroup.
  • sqrt-table depends on alloc, and enables the large precomputed tables (stored on the heap) that speed up square root computation.
• pasta_curves::arithmetic::SqrtRatio trait, extending ff::PrimeField with square roots of ratios. This trait is likely to be moved into the ff crate in a future release (once we're satisfied with it).

Removed

• pasta_curves::arithmetic:
  • Field re-export (pasta_curves::group::ff::Field is equivalent).
  • FieldExt::ROOT_OF_UNITY (use ff::PrimeField::root_of_unity instead).
  • FieldExt::{T_MINUS1_OVER2, pow_by_t_minus1_over2, get_lower_32, sqrt_alt, sqrt_ratio} (moved to SqrtRatio trait).
  • FieldExt::{RESCUE_ALPHA, RESCUE_INVALPHA}
  • FieldExt::from_u64 (use From<u64> for ff::PrimeField instead).
  • FieldExt::{from_bytes, read, to_bytes, write} (use ff::PrimeField::{from_repr, to_repr} instead).
  • FieldExt::rand (use ff::Field::random instead).
  • CurveAffine::{read, write} (use group::GroupEncoding::{from_bytes, to_bytes} instead).

[0.2.1] - 2021-09-17

Changed

• The crate is now licensed as MIT OR Apache-2.0.

[0.2.0] - 2021-09-02

Changed

• Migrated to ff 0.11, group 0.11.

[0.1.2] - 2021-08-06

Added

• Implementation of group::WnafGroup for Pallas and Vesta, enabling them to be used with group::Wnaf for targeted performance improvements.

[0.1.1] - 2021-06-04

Added

• Implementations of group::cofactor::{CofactorCurve, CofactorCurveAffine} for Pallas and Vesta, enabling them to be used in cofactor-aware protocols that also want to leverage the affine point representation.

[0.1.0] - 2021-06-01

Initial release!