louib / challenge-response Goto Github PK

There are a few WIP PRs to add an async API to rusb (for example here), but none have landed yet. There is also nusb, which is a pure Rust async-first library

From what I understand, this is part of the FIDO2 standard, and will eventually replace the current proprietary HMAC-SHA1 extension used by the YubiKeys and others. Here's the link to the spec, and here is the doc from Yubico.

This is similar to #11. We currently depend on libusb, which I believe is dynamically linked. I think removing the dependency on libusb would make this library pure Rust.