1.\" $NetBSD: fwhrng.4,v 1.3 2017/02/18 22:39:02 wiz Exp $ 2.\" 3.\" Copyright (c) 2010 Jukka Ruohonen <jruohonen@iki.fi> 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Neither the name of the author nor the names of any 12.\" contributors may be used to endorse or promote products derived 13.\" from this software without specific prior written permission. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS 16.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 19.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25.\" POSSIBILITY OF SUCH DAMAGE. 26.\" 27.Dd February 17, 2017 28.Dt FWHRNG 4 x86 29.Os 30.Sh NAME 31.Nm fwhrng 32.Nd Intel Firmware Hub Random Number Generator 33.Sh SYNOPSIS 34.Cd "fwhrng* at ichlpcib?" 35.Sh DESCRIPTION 36The 37.Nm 38driver provides support for hardware Random Number Generator 39.Pq Tn RNG 40available on some Intel Firmware Hubs 41.Pq Tn FWHs . 42The 43.Nm 44driver accesses the 45.Tn RNG 46through an 47.Tn I/O 48controller hub 49.Pq Tn ICH . 50.Sh SEE ALSO 51.Xr rnd 4 , 52.Xr x86/ichlpcib 4 53.Rs 54.%A Intel Corporation 55.%T Intel 82802AB/82802AC Firmware Hub (FWH) 56.%D November, 2000 57.%U http://download.intel.com/design/chipsets/datashts/29065804.pdf 58.Re 59.Sh CAVEATS 60The entropy source is not tested for randomness. 61