What it is
Sigil is a physical containment system for agentic key management. Signing authority is split two ways: a cold shard held on a floppy disk as presignature shares, and an agent shard on the agent’s own device. Neither can sign alone, the disk holds no key material, and a presignature is consumed when it is used — so a stolen disk is worth at most the presignatures left on it, and an agent cannot sign at all without someone putting the disk in.
Sigil is unaudited and uses new cryptography. Its repository says so before anything else, and so does this page.
Who it is for
People running software agents that hold signing authority and want a physical step in the loop — a human putting a disk in a drive — rather than a key sitting on a server. It is early work; read the security documents in the repository before using it for anything that matters.
Where it lives
- Repository — github.com/chippr-robotics/sigil
- Sigil has no site and no documentation site yet, and no mark of its own — when it has them, they will be listed here.
How to follow
- Releases — github.com/chippr-robotics/sigil/releases
- There is no blog category for Sigil yet; posts about it appear on the blog.