> The relocation and rekeying was just a way to punish non-compliant members by excluding them, turning them back into non-members. It's also a necessary way t

> The relocation and rekeying was just a way to punish non-compliant members by excluding them, turning them back into non-members. It's also a necessary way to provide forward secrecy, which is how you make sure that even if a message could be decoded, it wouldn't help the decoder to get to the other message's content.