<![CDATA[Built a self-hosted messenger.]]>Built a self-hosted messenger.

Encryption: X25519 key exchange, XChaCha20-Poly1305 for messages. New devices require approval from a trusted device before key exchange. Server never touches plaintext.

LAN mode: UDP broadcast on :45678, clients discover each other and exchange public keys automatically.

Stack: Flutter (Android, Windows, macOS, Linux).

Still in beta.

https://github.com/wardcore-dev/onyx

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]]>https://board.circlewithadot.net/topic/ac842c23-ff3a-43ed-8ae3-00aee080a3cf/built-a-self-hosted-messenger.RSS for NodeFri, 15 May 2026 00:12:51 GMTWed, 29 Apr 2026 13:06:16 GMT60