Idle curiosity: how would you design an encrypted messaging system for multiple parties?
I was thinking: encrypt a message body with a randomly generated key, sign with your own private key, then encrypt the random key with each recipients' public key and send that to each recipient. Each recipient gets their own unique payload.
just wondering out loud...
Howard Chu @ Symas
npub1tt…ex9ud
2026-10-25 15:19:25 UTC
Author Public Key
npub1tt4j2zeswksjh5z7zmy283qd4yd920afy9j28xg45wsxzhl9rpjqrex9udSeen on
wss://relay.ditto.pubPublished at
2026-10-25 15:19:25 UTCEvent JSON
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"pubkey": "5aeb250b3075a12bd05e16c8a3c40da91a553fa92164a39915a3a0615fe51864",
"created_at": 1792941565,
"kind": 1,
"tags": [
[
"proxy",
"https://mastodon.social/users/hyc/statuses/117502218415291582",
"activitypub"
],
[
"client",
"Mostr",
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]
],
"content": "Idle curiosity: how would you design an encrypted messaging system for multiple parties?\n\nI was thinking: encrypt a message body with a randomly generated key, sign with your own private key, then encrypt the random key with each recipients' public key and send that to each recipient. Each recipient gets their own unique payload.\n\njust wondering out loud...",
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}