Try real AES-256 encryption. In your browser. Right now.

No data leaves this tab. No server involved. This is the exact encryption protecting Zephyrn calls and messages.

Your message

Encrypted ciphertext

Ciphertext output appears here after encryption.

This is all Zephyrn's server ever sees. Without your passphrase, this is computationally irreversible.

Decrypt

PBKDF2 key derivation · 100,000 iterations · SHA-256

AES-256-GCM authenticated encryption · 96-bit IV

Web Crypto API · Zero network requests · Verified in DevTools

This is just text.

Zephyrn applies this same cryptographic process to your voice calls, video calls, and file transfers — in real time, with sub-2ms overhead.