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Telegram Messenger LLP 2013 Aug Open standard: Phone number (e.g. +15550123), nickname (e.g. @example) Yes Yes No end-to-end encryption for group chats Yes No Yes Yes, contact blocking Yes Yes [13] Yes Yes Yes No ? MTProto Mumble: Thorvald Natvig 1999 Jul Open standard: Username Yes Yes No Only for certified robots No Centralistic Yes Yes Yes No
Telegram offers end-to-end encryption in voice and video calls, [10] and in optional private chats, which Telegram calls Secret Chats. Telegram also has social networking features, allowing users to post stories, create large public groups with up to 200,000 members, or share one-way updates to unlimited audiences in so-called channels. [11]
For some features: secret chats, [116] voice and video calls, [117] and voice chats in groups [117] No No No Tencent QQ: No [118] [119] No No No No Threema: No A valid phone number or email address is not required for registration & login. However, the mobile app serves as the primary device, due to the end-to-end encryption architecture. [120 ...
Telegram provides end-to-end encrypted calls [163] and optional end-to-end encrypted "secret" chats between two online users on smartphone clients, whereas cloud chats use client-server/ server-client encryption. Users can send text and voice messages, animated stickers, make voice and video calls, and share an unlimited number of images ...
Telegram did not enable end-to-end encryption by default on VoIP calls while users were using desktop software version, but that problem was fixed quickly. [ 24 ] [ 25 ] However, as of 2020, Telegram still features no end-to-end encryption by default, no end-to-end encryption for group chats, and no end-to-end encryption for its desktop clients.
Instant messaging (IM), sometimes also called "messaging" or "texting", consists of computer-based human communication between two users (private messaging) or more (chat room or "group") in real-time, allowing immediate receipt of acknowledgment or reply.
The group chat protocol is a combination of a pairwise double ratchet and multicast encryption. [18] In addition to the properties provided by the one-to-one protocol, the group chat protocol provides speaker consistency, out-of-order resilience, dropped message resilience, computational equality, trust equality, subgroup messaging, as well as ...
The European Court of Human Rights made a ruling in a long-running case involving Telegram's encrypted messaging. The fight to protect encryption just got a boost in a ruling about Telegram and Russia