Files
securebit-chat/index.html
T
lockbitchat 5f22b7dab5 feat(handshake): shrink the connection exchange; release v5.9.0
The invitation carried the whole session: both public keys, their signatures, a
salt, a challenge and the full SDP. It now carries only what brings up DTLS —
ICE credentials, the certificate fingerprint, candidates, an expiry — plus a
16-byte commitment to the key material. The key material itself moves to the
DataChannel and is checked against that commitment before it is parsed.

Measured on the live site: 2274 characters across 4 animated QR frames became
151 characters in a single frame.

The safety code is now computed over a transcript of both descriptors and both
key blobs, and the HKDF salt is derived from that same transcript instead of
being transmitted. authProof is replaced by one signature over it.

SBQ2_SEND_ENABLED is the single value that reverts new invitations to SB1.
2026-08-06 18:20:48 -04:00

230 lines
21 KiB
HTML

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, interactive-widget=resizes-content">
<meta http-equiv="Content-Security-Policy"
content="default-src 'self';
script-src 'self';
style-src 'self' 'unsafe-inline';
font-src 'self' data:;
connect-src 'self' stun: stuns: turn: turns:;
img-src 'self' data:;
media-src 'self' blob:;
object-src 'none';
frame-src 'none';
worker-src 'self';
manifest-src 'self';
form-action 'self';
base-uri 'none';
upgrade-insecure-requests;">
<meta http-equiv="X-Content-Type-Options" content="nosniff">
<meta http-equiv="X-XSS-Protection" content="1; mode=block">
<meta http-equiv="Referrer-Policy" content="strict-origin-when-cross-origin">
<!-- PWA Manifest -->
<link rel="manifest" href="./manifest.json">
<link rel="icon" type="image/x-icon" href="./logo/favicon.ico?v=1786054741114">
<!-- PWA Meta Tags -->
<meta name="mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="format-detection" content="telephone=no">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<meta name="apple-mobile-web-app-title" content="SecureBit">
<meta name="application-name" content="SecureBit">
<meta name="msapplication-TileColor" content="#ff6b35">
<meta name="msapplication-config" content="/browserconfig.xml">
<!-- iOS Splash Screens - Полная конфигурация с генератора -->
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<link rel="apple-touch-startup-image" media="screen and (device-width: 428px) and (device-height: 926px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)" href="./logo/splash/splash_screens/iPhone_14_Plus__iPhone_13_Pro_Max__iPhone_12_Pro_Max_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 390px) and (device-height: 844px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)" href="./logo/splash/splash_screens/iPhone_16e__iPhone_14__iPhone_13_Pro__iPhone_13__iPhone_12_Pro__iPhone_12_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 375px) and (device-height: 812px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)" href="./logo/splash/splash_screens/iPhone_13_mini__iPhone_12_mini__iPhone_11_Pro__iPhone_XS__iPhone_X_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 3) and (orientation: portrait)" href="./logo/splash/splash_screens/iPhone_11_Pro_Max__iPhone_XS_Max_portrait.png">
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<link rel="apple-touch-startup-image" media="screen and (device-width: 375px) and (device-height: 667px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)" href="./logo/splash/splash_screens/iPhone_8__iPhone_7__iPhone_6s__iPhone_6__4.7__iPhone_SE_portrait.png">
<link rel="apple-touch-startup-image" media="screen and (device-width: 320px) and (device-height: 568px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)" href="./logo/splash/splash_screens/4__iPhone_SE__iPod_touch_5th_generation_and_later_portrait.png">
<!-- iPad Portrait -->
<link rel="apple-touch-startup-image" media="screen and (device-width: 1032px) and (device-height: 1376px) and (-webkit-device-pixel-ratio: 2) and (orientation: portrait)" href="./logo/splash/splash_screens/13__iPad_Pro_M4_portrait.png">
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<!-- Apple Touch Icons -->
<link rel="apple-touch-icon" href="./logo/icon-180x180.png?v=1786054741114">
<link rel="apple-touch-icon" sizes="57x57" href="./logo/icon-57x57.png">
<link rel="apple-touch-icon" sizes="60x60" href="./logo/icon-60x60.png">
<link rel="apple-touch-icon" sizes="72x72" href="./logo/icon-72x72.png">
<link rel="apple-touch-icon" sizes="76x76" href="./logo/icon-76x76.png">
<link rel="apple-touch-icon" sizes="114x114" href="./logo/icon-114x114.png">
<link rel="apple-touch-icon" sizes="120x120" href="./logo/icon-120x120.png">
<link rel="apple-touch-icon" sizes="144x144" href="./logo/icon-144x144.png">
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<!-- Microsoft Tiles -->
<meta name="msapplication-TileColor" content="#ff6b35">
<meta name="msapplication-TileImage" content="./logo/icon-144x144.png">
<meta name="msapplication-config" content="./browserconfig.xml">
<!-- Theme colors -->
<meta name="theme-color" content="#ff6b35">
<meta name="msapplication-navbutton-color" content="#ff6b35">
<!-- Security Headers for PWA - CSP is already defined above -->
<!-- SEO -->
<title>SecureBit.chat — Private, Encrypted Messenger</title>
<meta name="description" content="SecureBit.chat is a free, end-to-end encrypted peer-to-peer messenger that runs entirely in your browser. No accounts, no servers storing your messages — ECDH P-384, AES-256-GCM and in-person SAS verification.">
<meta name="keywords" content="encrypted messenger, end-to-end encryption, peer-to-peer chat, P2P messenger, ECDH, DTLS, SAS verification, WebRTC, private chat, secure chat, no servers, no accounts, MITM protection, PFS">
<meta name="author" content="Volodymyr">
<meta name="robots" content="index, follow, max-image-preview:large, max-snippet:-1">
<link rel="canonical" href="https://securebit.chat/">
<!-- Open Graph -->
<meta property="og:site_name" content="SecureBit.chat">
<meta property="og:title" content="SecureBit.chat — End-to-End Encrypted Peer-to-Peer Chat">
<meta property="og:description" content="A secure messenger that runs entirely in your browser. No accounts, no servers storing your messages. Bring your own STUN/TURN servers — we don't impose anything.">
<meta property="og:url" content="https://securebit.chat/">
<meta property="og:type" content="website">
<meta property="og:locale" content="en_US">
<meta property="og:image" content="https://securebit.chat/assets/social-card.png">
<meta property="og:image:secure_url" content="https://securebit.chat/assets/social-card.png">
<meta property="og:image:type" content="image/png">
<meta property="og:image:width" content="1200">
<meta property="og:image:height" content="630">
<meta property="og:image:alt" content="SecureBit.chat — end-to-end encrypted, peer-to-peer chat">
<!-- Twitter Card -->
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:title" content="SecureBit.chat — End-to-End Encrypted Peer-to-Peer Chat">
<meta name="twitter:description" content="A secure messenger that runs entirely in your browser. No accounts, no servers storing your messages.">
<meta name="twitter:image" content="https://securebit.chat/assets/social-card.png">
<meta name="twitter:image:alt" content="SecureBit.chat — end-to-end encrypted, peer-to-peer chat">
<!-- Structured data (schema.org) -->
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "WebSite",
"@id": "https://securebit.chat/#website",
"name": "SecureBit.chat",
"url": "https://securebit.chat/",
"description": "End-to-end encrypted, peer-to-peer chat that runs entirely in your browser.",
"inLanguage": "en"
},
{
"@type": "WebApplication",
"name": "SecureBit.chat",
"url": "https://securebit.chat/",
"applicationCategory": "CommunicationApplication",
"operatingSystem": "Any (modern web browser)",
"browserRequirements": "Requires WebRTC and the Web Crypto API",
"description": "A free, end-to-end encrypted peer-to-peer messenger. No accounts, no servers storing messages — ECDH P-384, AES-256-GCM and in-person SAS verification.",
"image": "https://securebit.chat/assets/social-card.png",
"license": "https://opensource.org/licenses/MIT",
"isAccessibleForFree": true,
"offers": { "@type": "Offer", "price": "0", "priceCurrency": "USD" },
"featureList": [
"End-to-end encryption (ECDH P-384, AES-256-GCM)",
"Peer-to-peer WebRTC connection with no message servers",
"In-person SAS verification against man-in-the-middle attacks",
"Custom STUN/TURN servers and relay-only privacy mode",
"Encrypted file transfer",
"Installable Progressive Web App with offline support"
],
"sameAs": [ "https://github.com/SecureBitChat/securebit-chat" ]
}
]
}
</script>
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