age-plugin-se: Building a lean cross-platform cryptography tool

age-plugin-se allows you to protect arbitrary files with your Apple Secure Enclave. This plugin for age (a simple, modern and secure file encryption tool) is written entirely in Swift, and works on macOS, Linux, and Windows.

In this talk, I will show age-plugin-se in action, and touch on the steps taken to make it robust, simple, and distributable on multiple platforms (including Alpine Linux), all while keeping the dependencies (including tools) to a minimum.