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URNG(4)		       FreeBSD Kernel Interfaces Manual		       URNG(4)

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 en-
		   tropy.

     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>.

FreeBSD	13.0			April 28, 2018			  FreeBSD 13.0

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | SEE ALSO | HISTORY | AUTHORS

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