yes, there is two patterns of group messaging
one: you encrypt and send to a trusted central server (this is the IRC method) and they then encrypt it (usually via TLS) and send it to all the other clients - the encryption is just the connection, the raw data is all in the possession of the server operator
two: you encrypt each message you send to the group individually to each counterpart in the group... the cost in bandwidth expands linearly with the number of users, you also gain the ability to exclude group members from seeing your messages, and the others can't prove the authenticity of your messages to others without giving away their nsec
three: the MLS model, where the group uses a merkle tree style derivation scheme to generate a per-message key for each message that a central moderator can stop access of one user to it because they are the merkle root
four: to be invented
personally, i like two, because it lets me exclude people i don't want to read from reading my messages and everyone else can't out me without revealing their key and anything they say is hearsay otherwise
mleku / mleku™️
npub1fjq…leku
2024-07-04 23:10:26
in reply to nevent1q…0dz3
Author Public Key
npub1fjqqy4a93z5zsjwsfxqhc2764kvykfdyttvldkkkdera8dr78vhsmmlekuPublished at
2024-07-04 23:10:26Event JSON
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"content": "yes, there is two patterns of group messaging\n\none: you encrypt and send to a trusted central server (this is the IRC method) and they then encrypt it (usually via TLS) and send it to all the other clients - the encryption is just the connection, the raw data is all in the possession of the server operator\n\ntwo: you encrypt each message you send to the group individually to each counterpart in the group... the cost in bandwidth expands linearly with the number of users, you also gain the ability to exclude group members from seeing your messages, and the others can't prove the authenticity of your messages to others without giving away their nsec\n\nthree: the MLS model, where the group uses a merkle tree style derivation scheme to generate a per-message key for each message that a central moderator can stop access of one user to it because they are the merkle root\n\nfour: to be invented\n\npersonally, i like two, because it lets me exclude people i don't want to read from reading my messages and everyone else can't out me without revealing their key and anything they say is hearsay otherwise",
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