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by Veratyr
3104 days ago
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Neither. Both require tying your identity to a phone number. You're better off with Matrix/Riot or XMPP. Neither requires a phone number, both offer the ability to communicate securely, even with a compromised server. Both also support multiple devices, group chats and federation. |
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Signal periodically sends truncated cryptographically hashed phone numbers for contact discovery. Names are never transmitted, and the information is not stored on the servers. The server responds with the contacts that are Signal users and then immediately discards this information. Your phone now knows which of your contacts is a Signal user and notifies you if your contact just started using Signal.
However; I don't know if their server is peer-reviewed on a regulary basis, nor do i know if the software (besides the used ciphers) is also peer-reviewed. Can't find anything on it.