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Simon Tatham
Simon Tatham

Simon Tatham

simontatham@hachyderm.io

Simon Tatham

simontatham@hachyderm.io

Free software developer and hobby mathematician.

Author and lead developer of #PuTTY, and "Simon Tatham's Portable Puzzle Collection", a set of one-player puzzle games running on many platforms. Also various smaller or less well known things.

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2025-10-22 22:48:54 2025-10-22 22:44:00 2025-10-22 16:26:28 8999607

Simon Tatham
Simon Tatham
mastodon - Link to source

Simon Tatham

1 week ago • •

Simon Tatham

1 week ago • •


A (badly) hand-drawn picture of an imposing medieval-style castle with battlements and towers, titled "Fortress SSH".

Cryptographic terms are written all over the castle. The walls are captioned "STRONG ENCRYPTION"; the central battlements "BULK INTEGRITY PROTECTION"; one of the towers is labelled "POST QUANTUM KEM" and the other "PUBLIC KEY SIGNING". The castle gate is labelled "NON-REPLAYABLE AUTHENTICATION".

The entire fortress is supported precariously above a grassy plain by balancing on a single narrow and flimsy-looking pole, labelled "Actually checking the server's host key".
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in reply to Simon Tatham

Charles B
mastodon - Link to source

Charles B

in reply to Simon Tatham • 1 week ago • •

Peter Guttman's paper "Do Users Verify SSH Keys?" has one of the best abstracts I've ever seen.

usenix.org/system/files/login/…

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