fido(4)

fido4

Fido/u2f security keys

Usage

fido* at uhidev?

Overview

The fido driver provides support for FIDO/U2F-compatible USB security keys. They are Human Interface Devices (HID) which can be accessed via the /dev/fido/N interface.

The driver is compatible with the read(2), write(2), and ioctl(2) operations of the generic uhid(4) device but only accepts the optional HID ioctl(2) calls from root.

Files

/dev/fido/*

Releases

15 releases since OpenBSD 6.7; the text changed 1 time.

  1. 6.7
  2. 6.8–8.0

History

The fido driver first appeared in OpenBSD 6.7.

From man 8.0-current-20261101 in OpenBSD 8.0-current (2026-11-01). Parsed by carta from the page's mdoc source.