Leon Becker

Writing

At blog.leonbecker.de I write about manageable but capable software -- tools that stay small enough to understand without giving up on being useful.

Stelae -- a service that lets you edit WordPress in a private cloud and publish the result as static HTML, so your live site has no PHP, no database, and no attack surface.
mdview -- a native Wayland Markdown viewer written in C++17. It renders Markdown files quickly without pulling in a GUI toolkit or browser engine, sitting in the gap between terminal pagers like less and Electron-based viewers.
Transfer -- a Nextcloud app that adds "Upload by link" functionality, letting the server download files directly from a URL. Originally created by danth; now maintained by me.

The papers are published under my former name, Leon Sell.

An Empirical Evaluation of Search Algorithms for App Testing (2019), with Michael Auer, Christoph Frädrich, Michael Gruber, Philemon Werli, and Gordon Fraser. -- An empirical comparison of search algorithms for automated Android app testing, holding the framework fixed to isolate the effect of the search technique itself.
C3S: Cryptographically Combine Cloud Storage for Cost-Efficient Availability and Confidentiality (2018), with Henrich C. Pöhls and Thomas Lorünser. -- A scheme for distributing encrypted data across multiple cloud providers to improve availability and confidentiality while keeping storage costs reasonable.
CryptSDLC: Embedding Cryptographic Engineering into Secure Software Development Lifecycle (2018), with Thomas Lorünser, Henrich C. Pöhls, and Thomas Laenger. -- A software development methodology and architecture for integrating cryptographic primitives into cloud applications from the start, rather than bolting them on later.