Secure, private, one-time secret and file sharing — built with a zero-knowledge mindset from day one.
CipherOnce is a privacy-first platform that allows you to share sensitive information and files that can be accessed only once and are automatically destroyed after viewing or expiration.
All encryption happens client-side in your browser. CipherOnce servers never see your secrets in plaintext, ensuring true zero-knowledge security.
##key is copied — some apps truncate itCipherOnce is actively developed and security-reviewed. If you discover a bug, security vulnerability, or need support:
Responsible disclosure is appreciated.