v0.12.0

This release implements draft-irtf-cfrg-vdaf-05.

Breaking Changes

• The upgrade to draft-irtf-cfrg-vdaf-05 includes many wire breaking changes.
• The bits argument in the constructor of Prio3Sum has been changed from u32 to usize.

Features

• prio::codec::Encode and prio::codec::ParameterizedEncode have new methods that allow encodable types to provide a length hint. Types that override these methods may improve the performance of get_encoded(), which now uses this hint to pre-allocate its output buffer.
• The Poplar1 VDAF implementation is complete as of this release, though it is still behind the experimental feature flag.

What's Changed

• build(deps): bump serde_json from 1.0.93 to 1.0.94 by @dependabot in #485
• build(deps): bump thiserror from 1.0.38 to 1.0.39 by @dependabot in #487
• build(deps): bump rayon from 1.6.1 to 1.7.0 by @dependabot in #486
• build(deps): bump fiat-crypto from 0.1.17 to 0.1.18 by @dependabot in #488
• VDAF-05: Use little-endian byte-order for fields by @cjpatton in #495
• Derive Clone on vdaf::PrepareTransition by @tgeoghegan in #497
• Add length hints to encoding traits by @divergentdave in #496
• poplar1: Implement codecs for input shares and prep messages by @cjpatton in #501
• Fix clippy warning by @divergentdave in #502
• Harmonize bit length across Sum, SumVec, Average by @tgeoghegan in #505
• Increment VERSION to 5 by @divergentdave in #506
• build(deps): bump fiat-crypto from 0.1.18 to 0.1.19 by @dependabot in #513
• build(deps): bump serde from 1.0.152 to 1.0.155 by @dependabot in #512
• Fix build on 32-bit targets by @divergentdave in #517
• Add DAP draft references to version table by @divergentdave in #516
• Rely on subtle for constant-time equality of Seed by @divergentdave in #518
• prg: Implement PrgFixedKeyAes128 as specified in VDAF-05 by @cjpatton in #510
• Finish Poplar1 codec implementations by @divergentdave in #509
• Explicltly pass random bytes to Prio3 and IDPF by @divergentdave in #499
• Add a typo linting check to CI by @divergentdave in #524
• Explicitly specify a trait to fix a Chalk issue by @divergentdave in #520
• Use fixed key AES PRG in IDPF by @divergentdave in #519
• Bind IDPF generation/evaluation to a nonce by @divergentdave in #521
• Update test vectors for VDAF-05 by @divergentdave in #522
• Update documentation for VDAF-05 by @divergentdave in #523
• Reuse PrgFixedKeyAes128 keys within IDPF calls by @divergentdave in #525
• Bump version to 0.12.0 by @divergentdave in #538
• Deprecate Field96 by @divergentdave in #539

Full Changelog: v0.11.0...v0.12.0