🔐

See GP Encryption
Working in Your Browser

Real X3DH key exchange + AES-256-GCM. Watch Alice encrypt a message to Bob — then see Bob decrypt it. No signup. No data collected. Runs entirely in your browser.

X3DH / Curve25519 AES-256-GCM GRID_DICT Encoding
gp_demo.js — interactive
1
Alice & Bob generate identity key pairs waiting
2
Both generate ephemeral key pairs waiting
3
X3DH key agreement — shared secret derived waiting
4
Alice encrypts: "Hello Bob! This is a secret message." waiting
5
Bob decrypts with shared secret — plaintext restored waiting
LAYER 4 Paste to Decrypt — Client-Side Only

This proves decryption happens entirely in your browser. The ciphertext below was encrypted with AES-256-GCM. No server touches it. Paste ciphertext here to decrypt locally.

5 Layers. Mathematically Enforced.

L1 · AES-256-GCM

1 Military-Grade Encryption

NIST-standard AES-256 with Galois Counter Mode. The same encryption used by governments and banks. Each message gets a unique 96-bit nonce.

L2 · X3DH / Curve25519

2 Signal Protocol Key Exchange

Elliptic curve Diffie-Hellman using Curve25519. Your device and the recipient's device agree on a shared secret — our servers never see it.

L3 · GRID_DICT

3 Proprietary Word Encoding

256-word dictionary converts ciphertext into human-readable words. Unique to GridChat. Makes encrypted output inspectable without revealing content.

L4 · PRO GATE

4 Tier-Based Access Control

Your encryption keys never leave your device. PRO tier unlocks additional cipher layers. Even our servers can't downgrade your security.

L5 · SAFETY ENGINE

5 Real-Time Threat Detection

Phishing Shield blocks malicious links before you click. Leak Monitor checks if your data appears in breaches. Contact Guard detects impersonators.

Ready to try the full app?

No email required. Privacy by design. Your messages are mathematically unreadable to us.

Open GridChat Web Terms of Service Privacy Policy