Hemmelig

What is Hemmelig?

Hemmelig is an open-source platform designed for securely sharing sensitive information across organizational boundaries or between private individuals. The service encrypts messages and implements automatic self-destruction functionality, removing shared secrets after they have been read. The platform addresses the need for confidential communication when exchanging passwords, API keys, authentication tokens, or other sensitive data that should not persist in standard messaging channels or email systems. Users can share encrypted secrets via a generated link, which recipients access to view the message once before it disappears. Hemmelig is suitable for IT teams, security professionals, business users, and individuals who require a dedicated channel for ephemeral secret sharing. The open-source nature of the project allows organizations to review the codebase, verify security implementations, and optionally self-host the solution for enhanced control and compliance requirements. Key characteristics include end-to-end encryption, automatic message deletion after reading, and cross-organization accessibility without requiring user accounts or authentication. Being open-source and freely available, Hemmelig positions itself as a transparent alternative to proprietary secret-sharing tools, appealing to privacy-conscious users and organizations prioritizing code auditability.