binthere

Binthere is a zero-knowledge pastebin. Text entered by the user is encrypted in the browser before transmission, ensuring the server never receives plaintext.

It addresses the need for private sharing of notes that remain under the sender's control. Supported options include one-time viewing that causes the paste to self-destruct upon opening, automatic deletion after 24 hours, and password protection. The decryption key is embedded in the URL fragment so that the full link must be kept private. Encryption relies on AES-256-GCM and HKDF-SHA256. The interface allows creation of a sealed paste, entry of a password when required, decryption, copying of text, viewing of raw content, and immediate deletion.

The service is delivered as a web application. A shareable link can be generated, copied, or presented via QR code for scanning. Users interact with it through a browser-based form that handles encryption locally. The page title and metadata describe it as an encrypted, zero-knowledge pastebin.