Host: ariard -
The PR branch HEAD was 6c1cf4e at the time of this review club meeting.
- libsecp256k1-zkp is a C cryptographic library for experimental EC cryptosystems, e.g ECDSA sign-to-contract, ECDSA adaptor, MuSig2 and range proofs.
- This library is an upstream fork of libsecp256k1. While libsecp256k1’s scope is strictly the cryptosystems required to validate consensus rules, libsecp256k1-zkp aims to encompass any Bitcoin-related cryptosystems.
- #138 is an implementation of Flexible Round-Optimized Schnorr Threshold Signatures, a threshold multi-party signature scheme.
- What’s elliptic curve cryptography? What’s the base mathematical assumption providing hardness of the cryptosystems (e.g compared to [RSA](https://en.wikipedia.org/wiki/RSA_(cryptosystem)? What are the fundamental concepts of ECC and how do they interrelate?
- What’s ECDSA, the original signature scheme supported by Bitcoin consensus rules? What’s Schnorr, the novel signature scheme soft-forked in 2021?
- MuSig2 is another multi-party signature scheme. What’s the fundamental difference compared to FROST?
- What are the properties of the FROST scheme (e.g unbound concurrency, efficiency, etc)?
- What are the operations and their outcomes followed by FROST key-generation, preprocessing and signing phases?
- What are the advantages of using FROST in a Lightning node deployment context?