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CHANGELOG.md

0.4.0

Security

  • bits() in src/util.rs now produces all bits from its input slice instead of min(input_len, 8). This restores the full identity space for the KV1 and Waters schemes, which previously collapsed to 2^8 = 256. Fixes #12 via #13.

    Breaking for KV1 and Waters users: identity derivation for these two schemes now produces different values, so user secret keys (USKs) and ciphertexts issued by a 0.3.0 build are not compatible with 0.4.0. The other schemes (CGWKV, CGWFO, CGW, Boyen-Waters, Waters-Naccache) are unaffected.

Added

  • Realistic-identity collision tests for KV1 and Waters (#13).
  • Clippy lint job in CI (#15, #22).

Changed

  • Bumped criterion dev-dependency to 0.8 (#26).
  • Replaced the unmaintained paste dev-dependency with pastey (#31, addresses RUSTSEC-2024-0436).
  • Standardized README to the org-wide format and added the PostGuard logo (#11).
  • Cleaned up clippy warnings throughout the crate (#16, #21).
  • Dropped AI-slop phrasing from README and mkem doc comment (#24).

Fixed

  • Replaced the deprecated wasm32-wasi target with wasm32-wasip1 in CI.
  • README reference src/pke → src/ibe (#20).
  • Silence unused-import warning in the test_ibe macro (#34).

Removed

  • Commented-out unpack_pk benchmark (#19).

0.3.0

Changed

  • Changed multi-user key encapsulation, see this PR.
  • Changed irmaseal-curve 0.1.4 to pg-curve 0.2.0 (includes bls12_381 0.8).

0.2.3

Added

  • w-NAF precomputations speedups in all CGW schemes.

Changed

  • reference IACR eprint version in CGWKV CCA construction.

0.2.2

Added

  • All publicly exposed structs are Debug (#[deny(missing_debug_implementations)]).

Changed

  • renamed mr module to mkem.
  • renamed pke module to ibe.
  • Multirecipient encapsulation now returns an iterator.

0.2.1

Removed

  • Binary that prints the sizes. No longer required since constants are now listed on docs.rs.

0.2.0

Added

  • Seperation of KEMs and IBEs and their respective traits (IBKEM, IBE).
  • New anonymous schemes (some CCA-transformed): Chen-Gay-Wee, Boyen-Waters.
  • Support for multi-encapsulation (under the mr feature).

Changed

  • Bumped dependencies to irmaseal_curve 0.1.4, which forks bls12_381 0.7.0.
  • Speedup several other KEMs using multi_miller_loop.