One-Time Secret Share
Share sensitive passwords and tokens using zero-knowledge E2E encryption and burn-on-read links.
How to Use One-Time Secret Share
- Type or paste your confidential password, API key, or private note.
- Click 'Create Encrypted Secret Link'.
- Your browser generates a 256-bit AES cryptographic key locally and encrypts the text before upload.
- Copy the generated link (which contains the decryption key only in the URL hash #).
- Share the link with your recipient. Once opened, the secret is permanently deleted from the database.
Key Features & Privacy Guarantee
- Zero-Knowledge Architecture: The encryption key stays in the URL hash (#) and is never transmitted to the server.
- Burn-on-Read: The ciphertext is destroyed instantly the millisecond it is fetched.
- 24-Hour Expiration: Unopened links automatically expire and purge after 24 hours.
Frequently Asked Questions
Can UtilityNow read my secret?
No. The secret is encrypted inside your browser using AES-256 before being sent. The decryption key is appended in the URL hash (#key), which web browsers never send to web servers.
What happens if someone clicks the link twice?
The second time the link is opened, it returns a 404 Not Found error because the secret record was already destroyed on the first view.