Writing — Raphael Lugmayr

Writing — Raphael Lugmayrhttps://raphaellugmayr.at/en/writingWriting — Raphael LugmayrenHashing, encryption and digital signatures: the differencehttps://raphaellugmayr.at/en/writing/hash-verschluesselung-signaturhttps://raphaellugmayr.at/en/writing/hash-verschluesselung-signaturChecksums, confidentiality and verifiable origin serve different purposes. A decision guide for files, backups and software protocols.Fri, 18 Sep 2026 00:00:00 GMTChecking files with PowerShell: SHA-256 and the right byteshttps://raphaellugmayr.at/en/writing/powershell-dateien-pruefenhttps://raphaellugmayr.at/en/writing/powershell-dateien-pruefenA reproducible PowerShell exercise: create a test file, calculate SHA-256, compare line endings and interpret results correctly. With a PDF edition.Fri, 18 Sep 2026 00:00:00 GMTUnderstanding SHA-256: from bytes to a hashhttps://raphaellugmayr.at/en/writing/sha256-verstehenhttps://raphaellugmayr.at/en/writing/sha256-verstehenWhy a SHA-256 hash has 64 hexadecimal characters, how bytes matter and what a checksum actually establishes. With examples, a browser demo and PDF.Fri, 18 Sep 2026 00:00:00 GMTFrom prototype to operation: what to clarify before real usehttps://raphaellugmayr.at/en/writing/vom-prototyp-zum-betriebhttps://raphaellugmayr.at/en/writing/vom-prototyp-zum-betriebAn application runs. But who maintains it, notices errors and restores data? Six questions for the transition from demonstration to daily use.Fri, 11 Sep 2026 00:00:00 GMTA book that renews itselfhttps://raphaellugmayr.at/en/writing/ein-buch-das-sich-selbst-erneuerthttps://raphaellugmayr.at/en/writing/ein-buch-das-sich-selbst-erneuertThe free book from christlichdenken.at is regenerated with every release. What happens when you treat a book like software — and why.Thu, 23 Jul 2026 00:00:00 GMTTools that hold uphttps://raphaellugmayr.at/en/writing/werkzeuge-die-tragenhttps://raphaellugmayr.at/en/writing/werkzeuge-die-tragennerve supports software development, fleetdeck handles deployment. Why I build my own tools, explain them and state their limits.Sun, 19 Jul 2026 00:00:00 GMTOne instance per institutionhttps://raphaellugmayr.at/en/writing/eine-instanz-je-einrichtunghttps://raphaellugmayr.at/en/writing/eine-instanz-je-einrichtungWhy Schulmittag uses separate instances, the responsibility this creates and why isolation alone does not guarantee security.Wed, 15 Jul 2026 00:00:00 GMTSoftware for municipalities: what digitisation really needshttps://raphaellugmayr.at/en/writing/software-fuer-gemeindenhttps://raphaellugmayr.at/en/writing/software-fuer-gemeindenSchool meals on paper, spoken registrations, manual billing. What building Schulmittag taught me about municipal digitisation.Sun, 05 Jul 2026 00:00:00 GMT