Tag Info

Hot answers tagged

3

The problem you described is addressed and solved in different way by the Broadcast Encryption: roughly the problem is how to encrypt a message intended to more than one recipient. You described a naive approach to the problem, your solution is, indeed, probably the simplest one. The Broadcast Encryption concept was formalized and defined by Fiat and Naor ...


2

You will always need to have some way of identifying the other party, be it a pre-distributed key or out-of-band procedures as you are describing. There is no purely digital method that can do this without some kind of shared knowledge.



Only top voted, non community-wiki answers of a minimum length are eligible