[Semaphor]

You can also generate a certificate. Registering it requires receiving a letter by snail mail and it expires every X years (5 maybe?), but otherwise it's just like your certificate for your server you use to SSH in.

[lakomen]

2 years

[Semaphor]

3 years. I’m back at my computer and checked, my certificates were 2013, 2016, 2019 and 2022