CIPHERCHAT toolkit

Generate keys, encrypt for a contact, and decrypt what they send back — all in your browser, using the native Web Crypto API.

● keys never leave this device — nothing is sent anywhere

01 Your identity (RSA keys)

Paste an existing pair or generate a new one. Share the public key freely — keep the private key secret.

Your public key (share this)

Your private key (keep secret)

Recipient's public key

Message to encrypt (up to ~382 bytes)

Encrypted data (ciphertext)

Decrypted result