Bitburner
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One-time secret sharing

About Bitburner

A lightweight way to share secrets that self-destruct after viewing.

vberkoz.com

How it works

  • Client-side encryption: Your message is encrypted in your browser with AES-256-GCM.
  • One-time view: The message is deleted from storage the first time it is opened.
  • Expiration: Unviewed messages expire automatically.

Security and privacy

  • Key stays with you: The decryption key never leaves the URL.
  • Optional password: Add a password for an extra layer of protection.
  • No accounts: Share secrets instantly without registration.

Encryption details

  • Client-side AES-256-GCM: Your message is encrypted in your browser before upload.
  • Key never stored: The decryption key stays in the URL and is never saved on the server.
  • One-time access: The message is deleted from storage after the first view.

Great for sharing

  • Passwords, API keys, access links, and sensitive notes.

Blog

Read the latest writeups on how one-time secrets work in practice on the Bitburner blog.