• Allow custom certificate validation implementations to also handle handshake signature computation. This allows uses in non-web contexts, where webpki is not likely to process the certificates in use. Thanks to @DemiMarie-parity.
• Performance improvements. Thanks to @nviennot.
• Fixed client authentication being unduly rejected by client when server uses the superseded certificate_types field of CertificateRequest.
• Breaking API change: The writev_tls API has been removed, in favour of using vectored IO support now offered by std::io::Write.
• Added ed25519 support for authentication; thanks to @potatosalad.
• Support removal of unused ciphersuites at link-time. To use this, call ClientConfig::with_ciphersuites instead of ClientConfig::new.

What's Changed

• docs: prefer the IETF wording for cipher suite in https://github.com/rustls/rustls/pull/346
• Update base64 requirement from 0.11 to 0.12 by @dependabot-preview in https://github.com/rustls/rustls/pull/347
• bench: allow MTU to be specified for the server bulk bench by @nviennot in https://github.com/rustls/rustls/pull/355
• bench: read server entirely before sending buffer to client by @nviennot in https://github.com/rustls/rustls/pull/356
• Higher-level, misuse-resistant QUIC API by @Ralith in https://github.com/rustls/rustls/pull/362
• Bump mio to 0.7 by @linkmauve in https://github.com/rustls/rustls/pull/363
• stream: implement write_vectored by @Keruspe in https://github.com/rustls/rustls/pull/361
• QUIC: Don't set legacy_session_id, fix key update by @Ralith in https://github.com/rustls/rustls/pull/367

New Contributors

• @nviennot made their first contribution in https://github.com/rustls/rustls/pull/355

Full Changelog: https://github.com/rustls/rustls/compare/v/0.17.0...v/0.18.0