FIDO(4)

💅 fido(4) — FIDO/U2F security keys 💅

okay bestie, this page lives in the Kernel Interfaces Manual and it’s all about fido, no cap. 🫶

🌸 NAME 🌸

fido — FIDO/U2F security keys ✨

🎀 SYNOPSIS 🎀

fido* at uhidev?

💖 DESCRIPTION 💖

So the fido driver is literally here to support FIDO/U2F-compatible USB security keys. Yes, those little security-key besties. They are Human Interface Devices (HID), and you can access them through 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 it only accepts the optional HID ioctl(2) calls from root. Root-only energy, periodt. 👑

🦋 FILES 🦋

• /dev/fido/* — here’s the file path entry, bestie. 🫶

👑 SEE ALSO 👑

• uhid(4)
• uhidev(4)
• usb(4)

🌈 HISTORY 🌈

The fido driver first appeared in OpenBSD 6.7. iconic behavior, fr fr. 🎀

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huge kiss to the Debian crew for this page — dated August 21, 2020 — mwah 💖🫶