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CHANGELOG.md

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Changelog

0.4.2 (2022-11-14)

  • Removed most exponentiations from the constraint evaluation step for the Prover.

0.4.1 (2022-10-24)

  • Increased transition constraint exemption limit by 1.
  • Implemented custom doubling for f64 and f62 field.
  • Moved f64 field arithmetic to Montgomery form (constant time).
  • Updated MDS matrix and related-multiplication routine for Rp64_256 hash function.
  • Improved performance of Matrix::interpolate_columns function.
  • Added ability to "unbatch" a BatchMerkleProof (via BatchMerkleProof::into_paths() method).
  • Changed visibility of FRI utils (made them public).
  • Added support for FRI folding factor of 2 (in addition to 4, 8, and 16).

0.4.0 (2022-04-29)

  • Added support for Randomized AIR (with example).
  • Added support for custom number of transition constraint exemptions.
  • Enabled transition constraints of degree n + 1 when blowup factor is n.
  • Moved trace and constraint commitment construction into separate functions in the Prover trait.
  • Introduced Matrix struct in the prover which is used as a backing type for trace and constraint evaluations.
  • Added ExtensionOf trait and implemented it for all supported fields.
  • Sped up inversion in f64 field by using inversion method based on Fermat’s little theorem.
  • Implemented Randomizable trait for u32, u16, and u8 types.
  • [BREAKING] AirContext::new() now requires num_assertions parameter.
  • [BREAKING] Various interface changes in the Air trait to support multi-segment traces.
  • Increased min version of rustc to 1.60.

0.3.2 (2022-01-20) - crypto

  • Implemented into byte conversion for Rp64_256 digest.
  • Moved capacity elements to the front of the state for Rp64_256.

0.3.1 (2022-01-13) - crypto

  • Implemented digest to array conversion for Rp64_256 digest.
  • Exposed some internal functions of Rp64_256 publicly.

0.3.0 (2022-01-04)

  • Added f64 field.
  • Added support for cubic field extensions.
  • Added an implementation of Rescue Prime hash function in f64 field.
  • Switched to Rust 2021 and increased min version of rustc to 1.57.
  • [BREAKING] Renamed Air::BaseElement to Air::BaseField.
  • [BREAKING] Replaced prover::prove() function with Prover trait.
  • [BREAKING] Split ExecutionTrace struct into Trace trait and TraceTable struct.

0.2.0 (2021-08-23)

  • Added Blake3_192 as hash function option.
  • Implemented high-performance version of Rescue Prime hash function.
  • Removed alloc feature in favor of turning on no_std via --no-default-features flag only.
  • Moved rand dependency to dev-dependencies only and removed hashbrown dependency.
  • Increased min version of rustc to 1.54.

0.1.0 (2021-08-03)

  • Initial release