[Cryptography] Came up with a weird use case, got questions

[Peter Gutmann]

Randy Bush <randy at psg.com> writes:
>> HSMs have a means of changing the batteries. FWIW. Not saying this is
>> the way to go...
>
>honto????
>
>with a three battery protocol?  the mind boggles.

Either there are two batteries and you swap the dead one out while the other
powers the anti-tamper, or there's a supercap and you get X days to replace
the battery.

Peter.