Introducing UltrafastSecp256k1: A Multi-Architecture Exploration of Secp256k1 Optimizations

The decision to switch the project's license to MIT was influenced by feedback and a desire to align more closely with Bitcoin Core and related projects, eliminating adoption barriers. The main objective is to develop a portable, zero-dependency secp256k1 engine that can be easily evaluated and integrated within various systems. Recognizing the challenges associated with manually reviewing a large cryptographic codebase, efforts are being made to facilitate this process. This includes the creation of a clear threat model document, a breakdown of the audit surface to minimize it, the development of a reproducible benchmark harness for accurate performance comparisons, and conducting cross-implementation comparisons with libsecp256k1.

To enhance the project further, targeted feedback on specific subsystems such as scalar arithmetic, the field layer, and strategies for ensuring constant-time operations is deemed highly beneficial. This approach underscores the importance of community input in refining and improving the cryptographic engine, ensuring its security, efficiency, and ease of integration across different platforms and applications.