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Feb
7
comment Misunderstanding Broadcast Encryption
Ah I see... Ricky, yes I suppose that in most cases such a system is worthless. I am imagining a use case where there is an admin who approves people and who is publishing the encrypted message. When a new person gets approved, he doesn't want to send each of the old members a new key so any of their keys must be able to open the encrypted message. In this way only the admin can encrypt things and approve people but any of the members who have been approved can read the message with their own non-changing keys even as more members are added. Nova, well how could I do that?
Feb
6
comment Misunderstanding Broadcast Encryption
Not sure I understand what you're asking Ricky, all I was trying to say was that adding additional levels of locking can still be opened with any of the keys if they had been used to lock it once.
May
16
comment Algorithm Design for only Mutual Information Sharing
ok thank you. I wasn't aware about the multiple site policy and I will be more careful in the future.
May
16
comment Algorithm Design for only Mutual Information Sharing
right because of course A will know exactly the values of B's string at any locations where A has a 1