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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>About — MeshBay</title>
  <link rel="stylesheet" href="/assets/site.css">
</head>
<body>

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    <a class="site-nav-brand" href="/">MeshBay</a>
    <div class="site-nav-links">
      <a href="/about.html">About</a>
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  <div class="page">
    <h1>About MeshBay</h1>

    <p>MeshBay is a decentralized, peer-to-peer platform for file sharing,
       video streaming, and group messaging. It combines identity federation
       (via Mesh Hubs) with truly peer-to-peer data exchange (via Mesh Nodes).</p>

    <h2>Architecture</h2>
    <p>The system has three components:</p>
    <ul>
      <li><strong>Mesh Hub</strong> — a lightweight identity authority and group registry.
          It stores user accounts and group metadata, but never touches content.</li>
      <li><strong>Mesh Node</strong> — runs on the host user's machine. It stores and serves
          all files, streams, and chat messages directly to group members.</li>
      <li><strong>Mesh Client</strong> — a web browser or Android app. Connects directly to
          nodes for all data transfer. The hub is never in the data path.</li>
    </ul>

    <h2>Security</h2>
    <p>Private groups use end-to-end encryption with ChaCha20-Poly1305.
       Authentication uses Ed25519 signed JWTs. Key exchange is based on
       X25519 ECDH with HKDF. Passwords are hashed with Argon2id (64 MiB).</p>

    <h2>Open Source</h2>
    <p>MeshBay is open source. The code is available on
       <a href="https://github.com/cbesson/meshbay">GitHub</a>.</p>

    <h2>Contact</h2>
    <p>For questions or bug reports, open an issue on the
       <a href="https://github.com/cbesson/meshbay/issues">GitHub issue tracker</a>.</p>
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