NAME

urng — USB Random Number Generator devices

SYNOPSIS

urng* at uhub?

DESCRIPTION

The urng driver provides support for various true random number generator (TRNG) devices connected via USB. urng reads raw entropy from the device at a (hardware dependent) interval and stirs it into the system entropy pool with enqueue_randomness(9).

HARDWARE

The following devices are supported by this driver:

Araneus Alea I and II

Capable of delivering 100kbit/sec of hardware-generated entropy.

Altus Metrum ChaosKey 1.0

This device is capable of providing entropy at 10Mbit/s.

SEE ALSO

intro(4), usb(4), enqueue_randomness(9)

HISTORY

The urng driver first appeared in OpenBSD 6.2.

AUTHORS

The urng driver was written by Aaron Bieber <abieber@openbsd.org>,
Jasper Lievisse Adriaanse <jasper@openbsd.org>, and
Sean Levy <attila@stalphonsos.com>.