Our mission is to make sharing sensitive information simple, secure, and private.
In our digital lives, we constantly need to share sensitive information: passwords for a shared account, API keys for a project, or confidential notes.
Too often, we send this data through insecure channels like email, Slack, or text messages. This leaves a plain-text copy of the secret on servers, in chat logs, and in inboxes, making it vulnerable to data breaches, unauthorized access, and accidental exposure for years to come.
Sending a password in a chat is like sending a postcard with your house key taped to it. It might get there, but you have no idea who sees it along the way.
Your secret is encrypted and decrypted directly in your browser. The raw, unencrypted data never leaves your device.
The encryption key is part of the URL fragment (#), which is never sent to our servers. We only store encrypted gibberish and have no ability to decrypt your data.
Secrets are automatically and permanently deleted from our servers after they are viewed or when their expiration time is reached. Burn after reading, by design.
We believe privacy is a fundamental right. In an era of constant data collection and surveillance, individuals and teams need simple tools to protect their sensitive information without sacrificing convenience.
CipherOnce was created to be that tool: a straightforward, secure, and trustworthy utility for sharing secrets with peace of mind. No accounts required, no complex setup, just secure sharing that puts your privacy first.
Explore why CipherOnce is a modern, more secure alternative to traditional one-time secret sharing methods.
Learn the best practices for sharing passwords securely and how CipherOnce facilitates this process.
Understand the technology behind self-destructing messages and their importance in digital privacy.
A deep dive into our zero-knowledge architecture and what it means for the security of your data.
