What if you could send private messages without WhatsApp, Telegram, internet access, user accounts, or centralized messaging servers?

Meet Eccles Bluechat E2EE — an experimental Android messaging application built around decentralized, Bluetooth-based communication.

Designed with privacy and independence at its core, Eccles Bluechat explores:

🔐 End-to-end encryption using ECDH, HKDF-SHA256, and AES-256-GCM.

🔑 Android Keystore-backed cryptographic key protection.

📡 Serverless, internet-independent Bluetooth messaging.

🛡️ Trust-on-first-use (TOFU) identity verification.

📁 Encrypted local message and media storage.

📞 Bluetooth-based voice and video communication.

No accounts. No advertisements. No tracking.…