How to keep the original public key unchanged when a new member is added or deleted

ZenGo-X / multi-party-ecdsa

Rust implementation of {t,n}-threshold ECDSA (elliptic curve digital signature algorithm).

GNU General Public License v3.0

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How to keep the original public key unchanged when a new member is added or deleted #97

Closed yangmiok closed 4 years ago

yangmiok commented 4 years ago

How to keep the original public key unchanged when a new member is added or deleted？

omershlo commented 4 years ago

The library does not implement such functionality yet. In general, each party secret shares a 0 such that the new secret key shares are changing but their sum remains the same. New members will get secret shares from old members