Top all-time · #23549
The Cryptography Caffè ☕
Company blog · cryptographycaffe.sandboxaq.com/postssecurity
The Cryptography Caffè ☕ is the company blog at cryptographycaffe.sandboxaq.com, writing about security. Since 2024, 3 different Hacker News readers have linked it 4 times, most often “Protecting Signal Keys on Desktop with Yubikeys”. It is still writing: the last post was on 2025-09-03, and you can follow it by feed.
Too few sampled comments (1) to say how often HN recommends it.?
Why HN links it
HN readers link this Cryptography Caffè post on SSH's design, including the missing Host header. The one comment describes SSH's ad hoc wire formats and a survey of public keys gathered from SSH and TLS hosts.
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.
The Cryptography Caffè ☕ - Engineering tech blog from SandboxAQ.
Most-linked posts?
- Protecting Signal Keys on Desktop with Yubikeys2 people · 2 mentions · first linked 2024-11-15
What Hacker News says?
SSH is an incredibly versatile and useful tool, but many things about the protocol are poorly designed , including its essentially made-up-as-you-go-along wire formats for authentication negotiation, key exchange, etc. In 2024-2025, I did a survey of millions of public keys on the Internet, gathered from SSH servers and users in addition to TLS hosts, and discovered—among other problems—that it's incredibly easy to…
Comment linking /posts/survey-public-keys-internet/
on “SSH has no Host header”Submitted Debian weak keys are still out there on the Internet as a story · 3 points
HN discussionSubmitted Protecting Signal Keys on Desktop with Yubikeys as a story · 3 points
HN discussionSubmitted Protecting Signal Keys on Desktop (2024-11) as a story · 1 points
HN discussion