Timeline for How do end-to-end encrypted chat services ensure that the server admin doesn't add new members to a chat?

8 events

when toggle format	what		by	license	comment
Jun 16, 2020 at 9:49	history	edited	CommunityBot		Commonmark migration
Dec 24, 2018 at 19:04	history	edited	defalt	CC BY-SA 4.0	Added some more in-depth explanation to make the answer more appropriate and correction. Earlier answer was very brief with very little technical detail.
Dec 22, 2018 at 20:44	vote	accept	tao_oat
Dec 22, 2018 at 5:47	comment	added	defalt		@Clockwork-Muse The attacker cannot read previously sent messages. If he joins the group without participating in key exchange he won't be able to read current messages unless each group member agrees on a new group key. I edited it. If they agree, the intrusion will be detected.
Dec 22, 2018 at 5:38	history	edited	defalt	CC BY-SA 4.0	added 171 characters in body
Dec 22, 2018 at 5:03	history	edited	defalt	CC BY-SA 4.0	added 392 characters in body
Dec 21, 2018 at 23:53	comment	added	Clockwork-Muse		`All the infiltrator can see encrypted messages that are encrypted by the group key he never had which is same as sitting on the server and watch the passing messages.` - Uh, what? If the attacker never had the keys, how can they read the previous messages? Shouldn't that be something like, "All the infiltrator can see is new messages encrypted with the new group key, as he never had the old one"? Although note that if I was adding a back door to my own app, I wouldn't bother suppressing signals - I'd just silently open up another conversation to another "user".
Dec 21, 2018 at 20:43	history	answered	defalt	CC BY-SA 4.0