Thanks for the excellent summary Alex! On Tue, Jan 06, 2026 at 03:18:03PM +0100, Alexander Hansen Færøy via tor-relays wrote:
2. One cypherpunk asked about a potential bug where the key pinning the directory authorities does to enforce that RSA and the ed25519 identity keys of the relays mustn't individually rotate during the lifetime of a relay, but they had a situation where this had enforcement had failed at first, but when they wanted to switch back to the old tuple of keys, the directory authorities refused this. Alex (me) had no good answers to this, but it sounds like the person asking the question was in contact with Roger about this. Do we have a ticket for this? It sounds like a bug to me.
This one sounds like the recent tor-relays@ thread with telekobold, https://archives.seul.org/tor/relays/Dec-2025/msg00030.html From what is in the thread, it did not seem like a Tor bug, but rather more of a design surprise. --Roger