PXP (formerly "hybrid", formerly "caBLE") now is being used as a transport protocol for multiple application protocols, including CTAP2 hybrid and the digital credentials API. We might want to split the transport-level handling into a separate crate that is consumed by libwebauthn, and perhaps a future Digital Credentials library.
The PXP specification has been broken out from CTAP 2.3, and an initial working draft has been published at https://fidoalliance.org/specs/hybrid/proximity-exchange-protocol-v1.0-wd-20260717.html.
PXP (formerly "hybrid", formerly "caBLE") now is being used as a transport protocol for multiple application protocols, including CTAP2 hybrid and the digital credentials API. We might want to split the transport-level handling into a separate crate that is consumed by libwebauthn, and perhaps a future Digital Credentials library.
The PXP specification has been broken out from CTAP 2.3, and an initial working draft has been published at https://fidoalliance.org/specs/hybrid/proximity-exchange-protocol-v1.0-wd-20260717.html.