v0.10.0

Quick Summary

snow is now no_std-friendly, with only one required dependency (subtle) now if you bring your own cryptographic provider, thank you @complexspaces!

This release also sees some breaking API changes in the builder to further prevent misuse/abuse - more builder functions now return Result<Self, Error> instead of Self.

The P-256 curve is now also available as a non-default feature for those of you needing more curves in your life.

Finally, this release transitioned the snow codebase to Rust 2024 and has a new MSRV of 1.85.

New

• Add support for NIST P-256 curve by @AlfioEmanueleFresta in #185
• no_std support with alloc by @jmlepisto #183

Improvements

• Removed dependency on rand by @complexspaces in #193
• Update dead docs link for forming NoiseParams strings by @thombles in #129
• Fix documentation reference to parameters in examples/simple.rs by @okdistribute in #113
• Update various links by @robyoder in #151
• Fix nonce incrementing in stateful transport to match the specification by @complexspaces in #152
• s/Ed448/Curve448/ by @dconnolly in #155
• curve25519_dalek 4 by @kayabaNerve in #161
• Bump aes-gcm and chacha20poly1305 by @kayabaNerve in #166
• Simplify example code by @BlackHoleFox in #175
• added example for oneway pattern Xpsk1 by @bluen in #186

Migrating from 0.9

The main change you'll likely notice is the need to add expect(...) or ? to a few builder functions that have been updated to further limit the chance of misuse.

Here are the semver-breaking changes:

• Builder function fallibility: more functions in the builder now return a Result to more explicitly prohibit calling the same setter twice.
• DHChoice::Ed448 has been renamed to DHChoice::Curve448
• Multiple new error enum variants have been added.

PRs

• Update dead docs link for forming NoiseParams strings by @thombles in #129
• Fix documentation reference to parameters in examples/simple.rs by @okdistribute in #113
• Bump curve25519-dalek to v4.0.0-rc.0 by @tarcieri in #148
• Update various links by @robyoder in #151
• Fix nonce incrementing in stateful transport to match the specification by @complexspaces in #152
• s/Ed448/Curve448/ by @dconnolly in #155
• curve25519_dalek 4 by @kayabaNerve in #161
• Bump aes-gcm and chacha20poly1305 by @kayabaNerve in #166
• Simplify example code by @BlackHoleFox in #175
• Add support for NIST P-256 curve by @AlfioEmanueleFresta in #185
• added example for oneway pattern Xpsk1 by @bluen in #186
• Remove direct dependency on rand and rand_core by @complexspaces in #193

Full Changelog: v0.9.6...v0.10.0