Evercrypted – Messaging app with password-encrypted messages and post-quantum security

Summary: Evercrypted is a messaging app that enhances security by combining post-quantum end-to-end encryption with per-message password protection and a custom in-app keyboard to prevent keylogging. It operates without phone numbers or metadata collection and is fully open source.

What it does

Evercrypted uses CRYSTALS-Kyber1024 for post-quantum key exchange and XChaCha20-Poly1305 for message encryption. It adds password-based encryption per message and includes a built-in keyboard to bypass OS-level keyloggers and data collection.

Who it's for

It is designed for users requiring strong privacy protections beyond standard secure messaging, including resistance to quantum attacks and keylogging.

Why it matters

Evercrypted addresses vulnerabilities in typical secure messengers by preventing metadata leaks, keylogging, and exposure of messages on unlocked devices while preparing for future quantum threats.