Secure chat among several parties that trust each other. Doesn't really matter if n=2 or n=5. As for 2), one trivial solution would be to stimulate "true" mult

Secure chat among several parties that trust each other. Doesn't really matter if n=2 or n=5. As for 2), one trivial solution would be to stimulate "true" multi user chat by simply having n x n regular 2-party chats merged into a single view. Should scale for most reasonable chat room sizes.