Crate soft_fido2_transport 

Pure Rust CTAP Transport Layer

This crate provides transport implementations for CTAP (Client to Authenticator Protocol):

• CTAP HID protocol (message framing, fragmentation, reassembly)
• Channel management (CID allocation, message assembly, timeouts)
• Command handler abstraction for processing CTAP messages
• USB HID transport (via hidapi) - requires “usb” feature
• Linux UHID virtual device support (for testing)

Features

• usb: Enable USB HID transport (requires libudev on Linux)
• uhid: Enable Linux UHID virtual device support (Linux only)

Spec: https://fidoalliance.org/specs/fido-v2.2-rd-20230321/fido-client-to-authenticator-protocol-v2.2-rd-20230321.html#usb

Re-exports

pub use channel::ChannelManager;

pub use ctaphid::Cmd;

pub use ctaphid::Message;

pub use ctaphid::Packet;

pub use error::Error;

pub use error::Result;

pub use handler::CommandHandler;

pub use handler::CtapHidHandler;

pub use uhid::UhidDevice;

Modules

channel

CTAP HID Channel Management

ctaphid

CTAP HID Protocol Implementation

error

Transport layer error types

handler

CTAP HID Message Handler

uhid

Linux UHID Virtual HID Device Support