From dawuud at riseup.net Sun Jan 13 05:11:35 2019 From: dawuud at riseup.net (dawuud) Date: Sun, 13 Jan 2019 05:11:35 +0000 Subject: [katzenpost] Katzenpost rustification? Message-ID: <20190113051135.afjwwdkbgptf44zu@computer> Hi, I wrote some notes about making mixnet components in Rust that are binary compatible with existing Katzenpost components. ( https://github.com/katzenpost/docs/blob/master/drafts/priority_tasks.rst#rustification ) Rustification ============= The goal should be binary compatibility with the golang implementation of Katzenpost such that the existing golang components can interoperate with the new Rust components. Perhaps the biggest advantage of using Rust would be for writing mixnet clients as opposed to mix servers. A Rust mixnet client could easily present a FFI that could be used by user interfaces written in Java for Android and Swift for iOS. I wrote several relavant rust crates: * https://crates.io/crates/aez * https://crates.io/crates/ecdh_wrapper * https://crates.io/crates/mix_link * https://crates.io/crates/rust-lioness * https://crates.io/crates/epoch * https://crates.io/crates/sphinx_replay_cache * https://crates.io/crates/sphinxcrypto Sphinx binary compatibility --------------------------- * https://crates.io/crates/sphinxcrypto The rust Sphinx uses the exact same cryptographic primitives as the golang implementation. Therefore it should be fairly easy to make them binary compatible. They should share test vectors. Mix link layer binary compatibility ----------------------------------- * https://crates.io/crates/mix_link Currently this mix link layer crate uses ``Noise_XX_25519_ChaChaPoly_BLAKE2b`` however if the Katzenpost link layer were to upgrade to Kyber then the task of making this crate binary compatibility would be greatly simplified. Here's an implementation of Kyber: * https://crates.io/crates/kyber This ``mix_link`` crate uses the snow Noise protocol library implementation: * https://crates.io/crates/snow However we SHOULD patch snow with Kyber PQ KEM hybrid forward secrecy. Here's the snow github ticket for this task: * https://github.com/mcginty/snow/issues/39 Mix server ---------- Current work in progress rust mix server: * https://github.com/david415/mix_server Development progress has halted due to not being able to interoperate with the existing Katzenpost Directory Authority system. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: not available URL: