News for hackers. Stuff that matters.

A comment on You can change your number. Parent comment

Re:You can change your number by UncleMeat on Monday February 07, 2022 @07:44PM (#30253608)
> You send a msg that only personA can decrypt

How are you going to do this without getting this person's public key? And how are you going to get their public key without asking signal?

[ Parent | on HN ]
Re:You can change your number by SailingSperm on Monday February 07, 2022 @11:55PM (#30255027)
Yes, signal would manage that. This is still more privacy preserving than a phone number because the the public key isn't attached to your identity in the way a phone number is. You'd still need to getAllContactsPubKey()->encr(PersonAKey)->SendToAllContacts

So signal knows you requested all your contact pubkeys, that you sent a duplicate broadcast to all contacts, obscuring who it was intended for... that could be 0-n of m persons.

[ Parent | on HN ]