OmaSend for Android

High-performance, privacy-first local peer-to-peer file transfer, system share-sheet integration, 16-digit Luhn OmaID pairing, and real-time Wayland clipboard vault between Android, Web PWA, and Omarchy Linux.

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Architectural Evolution: OmaSend V2 Mobile Engineering

OmaSend for Android is engineered in lockstep with the Omarchy Linux desktop daemon and Web PWA client:

• 16-Digit Luhn Mod 10 OmaID Pairing: Zero-account, zero-server device pairing using RFC 2104 HMAC-SHA256 Blinded Rendezvous topics and RFC 5869 HKDF-SHA256 symmetric key derivation.
• AMOLED Zen Radar: Technical clutter is replaced with clean status indicators ([E2EE SECURE], [LAN DIRECT], [OMAID P2P]) and responsive tactile feedback.
• Universal Multi-Format Clipboard Vault: Real-time bi-directional clipboard sync supporting text and images with automatic WebP micro-thumbnail caching.
• Sensitive Clipboard Shield: Android 13+ ClipDescription.EXTRA_IS_SENSITIVE and password manager tags are automatically detected to protect credentials.
• Zero-Copy ByteBuffers (ASharedMemory Architecture): Memory allocations are optimized at the NDK layer, eliminating Garbage Collection pauses during multi-gigabyte streams.

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Official Google Play Closed Beta

OmaSend for Android is distributed officially via Google Play with verified SHA-256 application signing and Play Protect security scanning.

How to Install & Join the Beta (3 Simple Steps):

1. Join the Tester Community (Google Group):
   Join OmaSend Testers Google Group
   (Click "Join group" with the same Google account you use on your Android phone).

2. Opt-in to the Testing Program (Google Play Web):
   Opt-in on Google Play
   (Click "Become a tester" / "Test kullanıcısı ol").

3. Install from Google Play Store:
   Download OmaSend on Google Play
   (Open the link directly on your Android device to install via Play Store).

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Features & Capabilities

• Native Android Share Sheet Integration: Share photos, videos, audio, documents, and archives directly from Gallery, Camera, or Files with 1 tap.
• Live Bi-Directional Clipboard Bridge: Instantly copy text or images from your PC's Wayland desktop into Android, or push Android text directly to Linux with echo-loop prevention.
• Zero Cloud & Absolute Privacy: Operates strictly over local Wi-Fi and Blinded Rendezvous channels. Zero telemetry, zero external cloud servers, and zero tracking.
• Instant UDP Discovery: Automatic device discovery on port 53317 without tedious manual IP typing.
• Modern Jetpack Compose UI: Built with Material 3, Dark Acrylic palette, and fluid reactive state management.
• End-to-End Cryptographic Security: Zero-Trust ephemeral tokens, PIN authentication, and AES-256-GCM / BLAKE3 integrity verification.

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Security and Enterprise Zero-Trust Architecture

1. Anti-Forensics & RAM Zeroization (Memory Scrubbing): Cryptographic keys, in-flight transit buffers, and sensitive data are scrubbed from RAM immediately after use via explicit zero-fill byte manipulation.

2. Quantum-Resilient Cryptography: Integrates BLAKE3, a high-performance, quantum-resilient Merkle tree cryptographic hashing algorithm for stream and protocol header validation, alongside standard SHA-256.

3. Strict Dependency Verification: Every single Gradle dependency is cryptographically pinned and verified against SHA-256 checksums in verification-metadata.xml.

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Omarchy Linux Desktop & Web PWA Integration

• Desktop Plugin Repository: ozdil/omarchy-omasend
• Web PWA Client Repository: ozdil/omasend-web
• Engine Protocol: Compatible with OmaSend Linux Engine (omasend-engine) on port 53317.

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Build from Source

# Clone the repository
git clone https://github.com/ozdil/omasend-android.git
cd omasend-android

# Build Debug APK
./gradlew assembleDebug

# Build Release App Bundle (AAB)
./gradlew bundleRelease

# Install directly to connected phone via ADB
adb install -r app/build/outputs/apk/debug/app-debug.apk

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License

This project is licensed under the MIT License. See LICENSE for details.