Frostr: Turn Your Nsec Into Rotatable Multisig
Frostr is a simple t-of-n remote signing and key rotation protocol for Nostr, powered by FROST.
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- The protocol uses FROST in order to coordinate the signing of a message between multiple signing devices owned by a single user:
- Website or application makes a request to the user's signing device to sign a note.
- User's device makes a signed request to the remote signing device(s).
- Each remote device verifies the request and responds with a partial signature.
- User's device verifies each partial signature, then adds their own.
- The signatures are combined, and the complete signature is returned to the website / app.
Checkout the following demo video using Nostr signing clients Igloo and Frost2x by bitcoinplebdev:
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- Key libraries of the project include Frost, Nostr-P2P, and Bitfrost.
- Frostr is still under active development. All of the project's code is open-source. Contributors, testers, and reviewers are welcome to test it, poke holes, and provide feedback.
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Key features
- Break up your secret key into decentralized, distributable shares.
- Sign messages using t-of-n signing devices.
- If one share is compromised, your secret key is still safe.
- Discard and replace shares without changing your secret key and identity.
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Announcement / Archive
GitHub Repo
Website
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