Representing SHA-256 Hashes As Avatars
18 April 2021
How to turn 256 bits of entropy into a beautiful, avatar-friendly circular SVG: the Hashvatar
Articles
I write about TypeScript, Node.js, React, security and privacy.
Cargo, Docker and mtime
The perils of premature optimisation in detecting modified source files when building Docker images for Rust.
Mobile Device Frames For Excalidraw
11 June 2020
Building mobile UI mockups in Excalidraw is a lot of fun, but eye-balling screen ratios is not great. Here are some free resources to help you get started, and a guide on how to make your own frames.
Dark Mode For Excalidraw
5 June 2020
How to give a dark twist to Excalidraw diagrams with CSS filters.
The Security of GitHub Actions
GitHub Actions are a great way to build powerful customised CI/CD workflows using the power of community-driven resources, but they can be tricky to get right in terms of security.
Password Reset for End-to-End Encrypted Applications
15 February 2020
We forget passwords. Usually it's OK, because most websites implement a password reset feature. But how to do this in end-to-end encrypted applications that don't have access to the password in the first place ?
How To Store End-to-End Encryption Keys In The Browser
End-to-end encrypted applications use cryptographic keys that don't leave the client, so how do we store them securely in the browser ?
Building A Strava Authentication CLI In Rust
A first look at how to implement an OAuth authentication / authorization exchange in Rust.