https://sphinx.rs/ Recent content on Work Portfolio: David Stainton Hugo -- gohugo.io Tue, 04 Oct 2022 00:00:00 +0000 https://sphinx.rs/blog/katzenpost_mixnet/ Tue, 04 Oct 2022 00:00:00 +0000 https://sphinx.rs/blog/katzenpost_mixnet/ In light of the current political climate and the amount of surveillance we are all under it’s a pity end to end encrypted messaging systems aren’t using mixnets for their transport. However, mixnets are not messaging systems. A mix network is a transport protocol that can be used to compose various types of messaging systems. A few years ago I worked on an NLNet grant funding our work to make a messaging system for Katzenpost. https://sphinx.rs/blog/golang_cryptography/ Wed, 13 Jan 2021 00:00:00 +0000 https://sphinx.rs/blog/golang_cryptography/ In this blog post I will share with you how I write cryptography software in Go. This is a work in progress. I’ll periodically update this so as to fix mistakes and add more content. The cryptocomrade git repo is meant to accompany this blog post by providing code samples with a creative commons license (CC0): https://github.com/david415/cryptocomrade However I only added a few simple hash examples so far. I plan to add more soon. https://sphinx.rs/contact/ Mon, 01 Jan 0001 00:00:00 +0000 https://sphinx.rs/contact/ Email: [email protected] Social Twitter linkedin github https://sphinx.rs/mentorships/ Mon, 01 Jan 0001 00:00:00 +0000 https://sphinx.rs/mentorships/ Mentorships In 2017 I mentored Katharina Kohls from Bochum University (Germany) in the use of Tor and txtorcon to make customized Tor circuits for her Tor research project. Katharina’s work can be found here: https://www.infsec.ruhr-uni-bochum.de/lehrstuhl/mitarbeiter/kohls/ In 2020 I mentored Denis Varlakov from Tomsk State University (Siberia) in writing a comprehensive TCP injection detector which was directly inspired by my work on Honeybadger. Denis’s software is written in Rust and can be found here: https://github. https://sphinx.rs/projects/ Mon, 01 Jan 0001 00:00:00 +0000 https://sphinx.rs/projects/ See David Stainton’s github profile for additional open source projects. Rust I learned Rust by writing cryptography libraries and solving cryptopals challenges. My solutions to some of the cryptopals challenges Here you can see my process for learning Rust was to first solve the challenge in Golang and then port my solution to Rust. I’ve written my solutions in the form of a rust library (crate), and then each challenge is represented as an integration test case which tests the library’s code. https://sphinx.rs/writing/ Mon, 01 Jan 0001 00:00:00 +0000 https://sphinx.rs/writing/ Writing My Google Scholar Profile Least Authority’s Blog: Introduction to Mix Networks and Anonymous Communication Networks LeastAuthority TFA GmbH published this blog post I wrote as an introduction to mix networks and anonymous communication. Katzenpost Mix Network Design Specifications These Katzenpost mix network design specification documents are the direct result of a three month collaboration with Yawning Angel, George Danezis, Claudia Diaz, Ania Piotrowska and myself. https://sphinx.rs/publicspeaking/ Mon, 01 Jan 0001 00:00:00 +0000 https://sphinx.rs/publicspeaking/ These talks primarily took place in various areas of Europe where I talked about mix networks, a kind of anonymous communication network. My goal in these talks was to make some complex topics understandable to a non-technical audience and to advocate for privacy enhancing technology, especially anonymous communication networks. I believe that people’s untrained mathematical intuition is enough of a prerequisite for understanding deeply technical and complex topics involving cryptography and probability theory.