Hamare Raaj — Couples Chat App

AES

256-GCM ENCRYPTION

WebRTC

VIDEO + VOICE CALLS

ACCOUNTS NEEDED

100%

PRIVATE & ENCRYPTED

PROJECT_OVERVIEW

💌

What Is It?

Hamare Raaj ek private encrypted Android chat app hai jo specifically couples ke liye design kiya gaya hai. Koi account nahi, koi signup nahi — bas ek shared password se dono connect ho jaate hain aur messaging + calls shuru ho jaate hain.

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Security First

Har message AES-256-GCM se encrypt hota hai browser/app mein hi — plaintext kabhi server tak nahi pahunchta. Server mein sirf gibberish store hota hai. Galat password daalne par messages "[🔒 encrypted]" dikhenge.

⚡

Project Description

This app combines a real-time server for instant sync, AES-256-GCM with PBKDF2 key derivation (100,000 iterations, SHA-256) for end-to-end encryption, and WebRTC with STUN/TURN servers for peer-to-peer video & voice calls — all wrapped in a Capacitor-based native Android APK. Features include real-time typing indicators, message reactions, disappearing messages, custom profile photos, 5 color themes, dark mode, push notifications, and an animated lock screen. No account, no phone number — just a shared secret password connects two people privately.

SECURITY_TERMINAL

hamare-raaj@app ~ encryption.log

// Hamare Raaj — Security System Log

// AES-256-GCM · PBKDF2 · Server · WebRTC

$ init_encryption --algo=AES-256-GCM --kdf=PBKDF2 --iter=100000

✓ Key derived from password ... PBKDF2-SHA256 [100K iterations]

✓ Encryption key stays in browser ... never sent to server

✓ Server initialized ... Realtime Database connected

✓ WebRTC ready ... STUN[Google] + TURN[OpenRelay] configured

// Message flow...

$ user_a sends: "Tum mere liye sabse khaas ho" → AES-256 encrypt → server store

$ server: "U2FsdGVkX1+8fK..." ← only ciphertext visible

$ user_b recv: decrypt with shared key → "Tum mere liye sabse khaas ho" ✓✓

$ wrong_password: [🔒 encrypted] — no error, no hint, just silence

$ lock_chat: session cleared → all keys + state wiped from memory

APP_PREVIEW

KEY_FEATURES

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END-TO-END ENCRYPTION (AES-256-GCM)Har message send hone se pehle encrypt hota hai. PBKDF2 key derivation se password → cryptographic key banti hai (100,000 iterations, SHA-256) jo kabhi server par nahi jaati.
💬
REAL-TIME MESSAGINGServer ke through instant sync. Photo sharing, image lightbox, reply-to-message, message reactions (❤️ 😂 😮 😢 🔥 👍), copy, delete — sab features available.
📹
VIDEO & VOICE CALLSWebRTC se seedha in-app video/voice call — koi third-party app nahi. Incoming call modal, in-call mic/camera controls, Web Audio API ringtone, STUN + TURN servers for any network.
🔑
PASSWORD-ONLY ACCESSNo account, no phone number, no signup. Dono ko same password use karna hoga — galat password se koi bhi messages nahi padh sakta. Password strength indicator bhi hai.
⏰
DISAPPEARING MESSAGESMessages automatically delete ho jaate hain — 1 Hour, 24 Hours, ya 7 Days. Default off. Real privacy ke liye ek powerful feature.
👤
CUSTOM PROFILESReal photo upload karo ya 15 emoji avatars mein se choose karo. Bio (80 chars), in-app profile editing, profile card, aur real-time online/offline status.
✓✓
READ RECEIPTS & TYPING INDICATOR✓ sent, ✓✓ read (blue double tick). Animated typing dots jab doosra type kar raha ho — unka avatar bhi dikhta hai. Date chips aur auto-resize input bhi.
🎨
5 THEMES + DARK MODEPurple, Blue, Green, Orange, Dark — 5 color themes. Dark mode toggle with persistent preference. Animated lock screen with floating hearts. Smooth animations throughout.
📱
NATIVE ANDROID APKCapacitor se wrapped native Android APK. Camera & microphone access for calls. Home screen icon with 💌 branding. PWA Manifest configured. Direct install karo, koi store nahi chahiye.
🔒
LOCK CHAT FEATUREEk tap mein poora session lock — saari keys aur naam memory se clear ho jaate hain. Chat Lock karne par koi bhi access nahi kar sakta without re-entering the password.

HOW_IT_WORKS

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Step 1 — Enter Password

Dono log same shared password enter karte hain. PBKDF2 (SHA-256, 100K iterations) se ek strong AES-256 key derive hoti hai — sirf device mein, kabhi server par nahi.

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Step 2 — Encrypt & Send

Message likhte hi AES-256-GCM se encrypt hota hai. Server mein sirf ciphertext store hota hai. Encryption toast confirm karta hai: "🔒 Message encrypted & sent!"

📥

Step 3 — Receive & Decrypt

Doosre end par Server se ciphertext aata hai, local key se decrypt hota hai, aur plaintext message dikhta hai. Wrong password = "[🔒 encrypted]" — koi error nahi.

📹

Video / Voice Call

WebRTC peer-to-peer connection se directly call hoti hai. STUN (Google) + TURN (OpenRelay) servers ensure karte hain ki different networks mein bhi call kaam kare.

TECH_STACK

AES-256-GCM Encryption

PBKDF2 Key Derivation

WebRTC (P2P Calls)

STUN + TURN Servers

Capacitor (Android APK)

Web Audio API

PWA Manifest

Push Notifications

DEV_TIMELINE

Phase 01 — Foundation

Server setup, password-based room access system, basic real-time messaging with AES-256-GCM encryption integration. PBKDF2 key derivation implemented.

Phase 02 — Messaging Features

Photo sharing with auto-compress (max 400px, JPEG quality 80%), image lightbox, reply-to-message, message reactions (6 emojis), copy & delete, read receipts, typing indicator.

Phase 03 — Calls & Profiles

WebRTC video/voice calls with STUN+TURN servers, incoming call modal, in-call controls. Custom profile photos, 15 emoji avatars, bio, online/offline presence.

Phase 04 — Advanced Features

Disappearing messages (1H/24H/7D), Chat Lock, password strength indicator, encrypted image sharing, date chips, push notifications, Web Audio ringtone.

Phase 05 — Polish & Android APK

5 color themes, dark mode, animated lock screen with floating hearts, smooth animations, Capacitor wrapping for native Android APK, PWA manifest, home screen icon.

APP_SCREENSHOTS

// Click any screenshot to open full view & browse all images

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// Screenshot 01 — Lock Screen

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// Screenshot 02 — Chat Interface

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// Screenshot 03 — Video Call

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// Screenshot 04 — Dark Mode

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// Screenshot 05 — Color Themes

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// Screenshot 06 — Profile

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// Screenshot 07 — Reactions

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// Screenshot 08 — Disappearing Msgs

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// Screenshot 09 — Incoming Call

KEY_HIGHLIGHTS

🔒

Zero-Knowledge Encryption

Server ko bhi pata nahi kya likha gaya — sirf ciphertext store hota hai. Encryption key sirf dono ki devices mein hoti hai — koi third party access nahi kar sakta.

📡

Real-Time + Calls

Server for instant messaging sync + WebRTC for direct P2P video/voice calls — ek app mein dono ka combination. No third-party calling app needed.

📱

Native Android APK

Capacitor se wrapped proper Android app — camera, mic access, home screen icon, push notifications. Seedha install karo, Play Store nahi chahiye.

💕

Built for Two

Ek app jo specifically ek couple ke liye design ki gayi — floating hearts, animated lock screen, custom profiles, emoji avatars, 5 color themes — purely personal, purely private.

DOWNLOAD_APK

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HAMARE RAAJ — ANDROID APK

Direct install karo — koi Play Store nahi chahiye. "Unknown Sources" enable karo aur APK install karo. Dono devices par install karo, same password enter karo, aur connect ho jaao.

⬇ DOWNLOAD APK ⌥ VIEW SOURCE →

// Android 7.0+ required · Enable "Install from Unknown Sources" · Allow Camera + Mic permissions for calls