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CHANGELOG.md

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Changelog

0.8.4 (2024-03-18) - utils/core crate only

  • Re-added unintentionally removed re-exported liballoc macros (#263).

0.8.3 (2024-03-15)

  • Implemented Serializable and Deserializable on String (#258).
  • Extended range of possible implementations of ByteReader and ByteWriter. (#262).

0.8.2 (2024-02-27) - utils/core crate only

  • Extend write_many to support IntoIterator (#251)

0.8.1 (2024-02-21)

  • Refactored utils module re-exports to comply with latest clippy updates (#250).

0.8.0 (2024-02-06)

  • Added variable-length serialization and deserialization for usize type (#238).
  • [BREAKING] Removed Serializable and Deserializable implementations from slices and vectors (#239).
  • Moved from log to tracing for logging and added tracing-forest feature (#241).
  • Updated provable security estimation to explicitly use the number of openings (#242).
  • [BREAKING] Removed From<u64> and From<u128> implementations from field elements (#243).
  • Increased min version of rustc to 1.75.

0.7.4 (2023-12-18) - air crate only

  • Fixed a bug in StarkProof deserialization (#236).

0.7.4 (2023-12-07) - utils/core crate only

  • Added Clone derive to DeserializationError.

0.7.3 (2023-12-06) - utils/core crate only

  • Added default deserializer implementations (#233)

0.7.3 (2023-12-01) - air crate only

  • Fixed StarkProof::new_dummy() constructor (#234).

0.7.2 (2023-11-30) - air, fri, and utils/core crates only

  • Minor proof serialization and deserialization refactoring (#231).
  • Added StarkProof::new_dummy() constructor to simplify testing (#232).

0.7.1 (2023-11-17) - math crate only

  • Changed Debug format for field elements (#228).

0.7.1 (2023-10-28) - air crate only

  • Changed most methods for ProofOption to be const fn.

0.7.0 (2023-10-23)

  • [BREAKING] replaced the TraceLde struct with a trait (#207).
  • [BREAKING] refactored RandomCoin trait (#214).
  • Improved proven security estimation (#215).
  • [BREAKING] replaced the ConstraintEvaluator struct with a trait (#217).
  • Added support for proven security estimation in no_std context (#218).
  • [BREAKING] refactored verify() function to take AcceptableOptions as a parameter (#219).
  • Increased min version of rustc to 1.73 (#221).
  • Allowed duplicate query positions (#224).

0.6.5 (2023-08-09) - math crate only

  • Added conditional support for serde on field elements (#209)

0.6.4 (2023-05-26)

  • Simplified construction of constraint composition polynomial (#198).
  • Refactored serialization of OOD frame in STARK proofs (#199).
  • Re-exported btree_map and btree_set modules from core collections (#202).
  • Simplified construction of DEEP composition polynomial (#203).

0.6.3 (2023-05-03)

  • Sped up proof verification using batch inverse (#190).
  • Updated ConstraintCommitment to use RowMatrix internally (#191).
  • Sped up FRI prover via more efficient get_inv_offsets implementation (#193).
  • Exposed build_segments() method publicly (#194).

0.6.2 (2023-04-15)

  • Updated MerkleTree and matrix structs to make them more suitable for HW acceleration (#185).
  • Replaced log2() usage with native .ilog2() (#186).

0.6.1 (2023-03-29)

  • Disabled proven security estimation in no-std context.

0.6.0 (2023-03-24)

  • Implemented more efficient remainder handling in FRI (#139)
  • Removed term involving conjugate OOD challenge z from deep composition polynomial (#166).
  • Added FieldElement::EXTENSION_DEGREE constant.
  • Added FieldElement::base_element and FieldElement::slice_from_base_elements methods.
  • [BREAKING] Renamed FieldElement::as_base_elements into FieldElement::slice_as_base_elements.
  • Added Matrix::num_base_cols and Matrix::get_base_element methods.
  • [BREAKING] Renamed Matrix into ColMatrix.
  • [BREAKING] Replaced ColMatrix with RowMatrix to hold LDE trace in the prover (#168).
  • Updated conjectured security computation and added estimation of proven security (#151).
  • Changed root of unity for f64 field (#169).
  • Implemented reduction of public inputs and proof context to field elements (#172).
  • [BREAKING] Replaced RandomCoin struct with a trait (#176).

0.5.1 (2023-02-20)

  • Fix no-std build for winter-utils (#153)

0.5.0 (2023-02-20)

  • [BREAKING]: Refactored prover/verifier to take hash function as a generic parameter (#111).
  • Introduced FftInputs trait (#124).
  • Optimized as_int() method for f64 field (#127, #146).
  • Improved FRI remainder commitment methodology (#128).
  • Added new arithmetization-friendly hash functions: Griffin and Rescue Prime Jive (#129).
  • Fixed panic in prover when debugging with concurrent feature enabled (#130, #132).
  • Added variable-time exponentiation option to f64 field (#134).
  • Optimized squaring for degree 2 and 3 extension fields of f64 field (#138).
  • Simplified conversion to base elements for degree 2 and 3 extension field elements (#147).
  • Made closure types less restrictive for TraceTable::fill() (#149).
  • [BREAKING] Refactored serialization/deserialization traits (#150).

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