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Ondergetekende
Personal blog · ondergetekende.nlprogrammingsecurity
Ondergetekende is a personal blog at ondergetekende.nl about programming and security. Since 2018, 3 different Hacker News readers have linked it 4 times, most often “Vanity RSA Public Key”. It is still writing: the last post was on 2026-10-19, and you can follow it by feed.
Too few sampled comments (1) to say how often HN recommends it.?
Why HN links it
Commenters link this post about a vanity RSA public key that carries arbitrary content in its base64 form, in the xz backdoor thread. The comment notes how much room an RSA key leaves for such data.
Summarised by Claude from a sample of 1 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Most-linked posts?
- Vanity RSA Public Key3 people · 3 mentions · first linked 2018-05-17
What Hacker News says?
I did something similar some time ago, targeting base64 representation instead of cpu instructions: https://ondergetekende.nl/vanity-rsa-public-key.html There's quite a bit of room in an RSA key for arbitrary contents, especially if you don't care about the security of said key.
Comment linking /vanity-rsa-public-key.html
on “Putting an xz Backdoor Payload in a Valid RSA Key”Submitted Going the Way of the Lithographer as a story · 2 points
HN discussionSubmitted Vanity RSA Public Key as a story · 1 points
HN discussionSubmitted Vanity RSA public key as a story · 1 points
HN discussion