AES-256-GCM Encryption

Military-Grade
Private Chats

End-to-end encrypted chat rooms that self-destruct. No accounts. No metadata. Everything burns when you leave.

E2E EncryptedAnonymousAuto-destruct

Private rooms. No traces.

Every feature designed for privacy. See what's possible in zkChat rooms.

Encrypted Messages

End-to-end encrypted text with no server-side history

Let's switch to zkChat
10:23

Secure Voice Notes

Encrypted voice messages that never touch the server unencrypted

0:11
Tap to play

Encrypted Photos

Share images as encrypted messages, not public links

Burn the Room

One click to destroy the room state for everyone

Secret message 1
Secret message 2
Clears history and destroys the room

Ephemeral by Design

Rooms self-destruct when empty or timer expires

48:23

Time remaining until room destruction

The zkChat Lifecycle

Understand exactly what happens to your messages from creation to destruction

1

Create & Encrypt in Browser

Your message is encrypted with AES-256-GCM before leaving your device. The encryption key never touches the server—it lives only in the URL fragment you share.

Plaintext → AES-256-GCM → Ciphertext
a7f3b2e9c4d1... (encrypted blob)
2

Transit Through Relay (No Decryption)

The relay server only sees encrypted blobs. It cannot decrypt your messages because it doesn't have the key. No plaintext, no identities, no metadata is ever stored.

Server sees:
???????????????????????? (unreadable ciphertext)
3

Decrypt & Read in Recipient's Browser

The recipient's browser uses the shared key from the URL to decrypt the message. Decryption happens entirely client-side—the server never sees the plaintext.

Ciphertext + Key → Plaintext
"Let's switch to zkChat"
4

Self-Destruct on Exit

When you close the tab or the timer expires, the room is destroyed. No history is saved—everything burns. Even if someone has the link, they can't recover past messages.

Room destroyed • All messages deleted

The encryption key is never logged, and the relay forgets the room ever existed.

Frequently Asked Questions