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Sunset Changelog

0.4.0 - 2026-01-11

Added

  • Add server authentication helpers matches_username(), matches_password() for constant time comparison.

  • Add environment session variable support

  • Add mlkem768x25519 hybrid post-quantum key exchange Enabled by mlkem feature, will soon be default.

Fixed

  • Fix public key authentication for the server, previously signatures would not validate. Github #30

  • Don't fail in some circumstances during key exchange when packets are received in particular order. Github #25, Github #27

  • Fix a hang where channels wouldn't get woken for more output after the SSH stream was written out. Github #25

  • Fix using sshwire-derive outside of sunset

Changed

  • Server auth events such as ServFirstAuth can enable or disable password or public key auth for subsequent attempts. Now no authentication methods are enabled by default, they must be explicitly enabled with eg enable_password_auth(), enable_pubkey_auth().

  • Minimum Rust version is 1.87

  • Channels::by_handle_mut() renamed from from_handle_mut() to be more idiomatic.

  • Log a better warning when host key signatures fail

  • Code size improvements.

  • Fail with PacketWrong when calling an event method, rather than on a subsequent progress() call.

  • CI scripts now build in target/ci rather than testing/target

0.3.0 - 2025-06-16

Changed

  • New Event API to customise program behaviour, replacing previous Behaviour trait.

  • Reduced code size, client or server code is not included where not used (implemented with CliServ generic parameter).

  • Various fixes and API improvements. Edge conditions caught by fuzzing are now handled properly.

  • picow and Embassy std demos are moved to a separate top level demos/ directory.

  • Demos config username changed from "admin" to "config".

  • sunset-async is now the common async crate, for both no_std and std (previously named sunset-embassy).

  • sunset-stdasync crate has std-specific features and the sunsetc commandline client example (previously named sunset-async).

Added

  • Added an initial server fuzzing target.

  • Improved some API documentation.

Removed

  • Removed defmt, now only have log. defmt could be re-added if there is a use, but at present it's simpler to keep one format syntax.

0.2.0 - 2024-03-03

  • First working release

Start

April 2022