> Key changes in a messenger are totally different. They happen under normal conditions
This doesn't have to be the case. If you stop coupling a key to a device and instead couple a key to a person (generating a key deterministically from a password for example), they can be changed far more rarely.
This doesn't have to be the case. If you stop coupling a key to a device and instead couple a key to a person (generating a key deterministically from a password for example), they can be changed far more rarely.