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CHANGELOG.md

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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]

(relative to halo2 0.1.0-beta.1)

Added

  • halo2_proofs::plonk:
    • VerificationStrategy
    • SingleVerifier, an implementation of VerificationStrategy for verifying proofs individually.
    • BatchVerifier, an implementation of VerificationStrategy for verifying multiple proofs in a batch.
  • halo2_proofs::dev::FailureLocation (used in VerifyFailure::Lookup)

Changed

  • halo2_proofs::commitment::verifier::Guard, which is returned from halo2_proofs::plonk::verify_proof, has changed so that values returned from its method compute_g and expected in its method use_g are not backwards compatible with values in previous versions.
  • halo2_proofs::plonk::verify_proof now takes a VerificationStrategy instead of an MSM directly.
  • halo2_proofs now depends on rand_core instead of rand.
  • halo2_proofs::plonk::create_proof now take an argument R: rand_core::RngCore.
  • halo2_proofs::plonk::Error has been overhauled:
    • Error now implements std::fmt::Display and std::error::Error.
    • Error no longer implements PartialEq. Tests can check for specific error cases with assert!(matches!(..)), or the assert_matches crate.
    • Error::IncompatibleParams is now Error::InvalidInstances.
    • Error::NotEnoughRowsAvailable now stores the current value of k.
    • Error::OpeningError is now Error::Opening.
    • Error::SynthesisError is now Error::Synthesis.
    • Error::TranscriptError is now Error::Transcript, and stores the underlying io::Error.
  • halo2_proofs::dev::CircuitLayout::render now takes k as a u32, matching the regular parameter APIs.
  • halo2_proofs::dev::VerifyFailure has been overhauled:
    • VerifyFailure::Cell has been renamed to VerifyFailure::CellNotAssigned.
    • VerifyFailure::ConstraintNotSatisfied now has a cell_values field, storing the values of the cells used in the unsatisfied constraint.
    • The row fields of VerifyFailure::{ConstraintNotSatisfied, Lookup} have been replaced by location fields, which can now indicate whether the location falls within an assigned region.
  • halo2_proofs::plonk::ConstraintSystem::enable_equality and halo2_proofs::plonk::ConstraintSystem::query_any now take Into<Column<Any>> instead of Column<Any> as a parameter to avoid excesive .into() usage.

Removed

  • halo2_proofs::arithmetic::BatchInvert (use ff::BatchInvert instead).
  • impl Default for halo2_proofs::poly::Rotation (use Rotation::cur() instead).
  • halo2_proofs::poly:
    • EvaluationDomain::{add_extended, sub_extended, mul_extended}
    • Polynomial::one_minus
    • impl Neg, Sub for Polynomial
    • impl Mul for Polynomial<_, ExtendedLagrangeCoeff>