Creează un cont pentru a te abona la acest blog și a-i urmări articolele pe pagina Lectură.
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This is a follow-up of the How to TPM blog post.
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The resources of this post can be found on Github.
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I gave a talk about the current state of full disk encryption at GPN23 (20.06.2025). slides (pdf), submission, media.ccc.de, youtube Submission / agenda In theory, full disk encryption (FDE) just works.
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Update 2025/06: Adding feedback I got (jump) Update 2025/07: Follow-up blog post with a bit more insights about Windows FDE (blog post) Update 2026/07: Update smaller things, share some experience at the end (jump) TLDR: The goal of this text is to make T…
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TLDR: I patched i3lock to update a file when I unlock my laptop.
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In general I like the nicolaka/netshoot image for troubleshooting.
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Update 2025-04: Fix typos and some smaller clarifications So, you’re running Linux with full disk encryption (luks).
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Update 2025/04: Add section “Disk encryption: LUKS + fido2 device” Update 2025/04: Add section “Change FIDO2/U2F pin” This post shows different use cases for a Yubikey.
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So, what it firejail?
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Ich sitze gerade im Flixzug und habe wieder das Problem, dass das Internet nicht funktioniert.
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I gave a talk at GPN20 about a proof of concept I wrote: an implementation of evil maid attack on devices with an encrypted /boot partition.
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Some tools, links and snippets for debugging software on (Arch) Linux On Arch Linux, we get “unlimited” core dumps.
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Meta There are no hard problems.
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Why IPsec is hard to debug: The fact that you see some plain text, but not all plain text, is the most confusing aspect of IPsec to system administrators, who now believe hey are leaking plain text.
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Some useful commands for network debugging on Linux.
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So.
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tldr: we use Apache Benchmark to send requests to an Apache + PHP-FPM backend while looking at the output of some performance analysis tools.
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Build an example module Let’s start by write a simple test module.
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tldr: We take an email and verify the DKIM-Signature step by step using python.
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I gave a short introduction about web development in Python (flask) at the Jugend hackt event in Berlin.