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

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to Rust's notion of
[Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]

## [0.4.1] - 2022-10-13
### Added
- `uninline-portable` feature flag, which disables inlining of some functions.
  This is useful for tiny microchips (such as ARM Cortex-M0), where inlining
  can hurt performance and blow up binary size.

## [0.4.0] - 2022-05-05
### Changed
- MSRV is now 1.56.0.
- Migrated to `ff 0.12`, `group 0.12`.

## [0.3.1] - 2022-04-20
### Added
- `gpu` feature flag, which exposes implementations of the `GpuField` trait from
  the `ec-gpu` crate for `pasta_curves::{Fp, Fq}`. This flag will eventually
  control all GPU functionality.
- `repr-c` feature flag, which helps to facilitate usage of this crate's types
  across FFI by conditionally adding `repr(C)` attribute to point structures.
- `pasta_curves::arithmetic::Coordinates::from_xy`

### Changed
- `pasta_curves::{Fp, Fq}` are now declared as `repr(transparent)`, to enable
  their use across FFI. They remain opaque structs in Rust code.

## [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!