CypherBay

Anonymous, end-to-end encrypted communication

CypherBay is a minimalist web messenger for private communication. No registration. No accounts. No personal data.

[E2E] End-to-End Encryption

Messages are encrypted in your browser. The server only sees encrypted data.

[ANON] No Identity

No login, no account, no email. Completely anonymous.

[PRIV] No Tracking

No cookies, no analytics, no external services.

[HOST] Self-Hosting

All code is open and can be self-hosted.

System Limitations

  • Metadata (IP address, connection times) is visible to the server
  • For maximum anonymity: use Tor Browser
  • No guarantees if your device is compromised
  • Password must be shared via a secure channel

CypherBay - Privacy by Design

Create New Chat

This ID identifies your chat. Share it with your conversation partners.

The password is never sent to the server. It is used for encryption only.

Important: Both the Session ID and password are required to join the chat. There is no password recovery.

Join Chat

If the password is incorrect, messages will not be readable. No error message will be returned from the server.

Session:
Connecting...
[ENCRYPTED] Encryption Status

All messages are encrypted with AES-256-GCM.

The key is derived locally from your password (PBKDF2).

The server cannot read the content.