1.\"- 2.\" Copyright (c) 2003 Sam Leffler, Errno Consulting 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.\" $FreeBSD$ 27.\" 28.Dd May 11, 2020 29.Dt RNDTEST 4 30.Os 31.Sh NAME 32.Nm rndtest 33.Nd FIPS 140-2 random number generator test monitor 34.Sh SYNOPSIS 35.Cd "device rndtest" 36.Sh DESCRIPTION 37The 38.Nm 39driver 40.Dq "hooks up" 41to hardware crypto devices to monitor the 42entropy data passed to the 43.Xr random 4 44subsystem. 45This data is periodically tested for FIPS 140-2 compliance and 46statistics are collected. 47If the harvested entropy fails any of the FIPS test suite, then 48it is discarded and testing is continuously applied until 49.Dq "good data" 50is received from the device. 51Failures are optionally reported on the console. 52.Sh SEE ALSO 53.Xr crypto 4 , 54.Xr hifn 4 , 55.Xr random 4 , 56.Xr safe 4 , 57.Xr crypto 9 58.Sh HISTORY 59The idea for this and the original code came from 60.An "Jason L. Wright" . 61The 62.Nm 63device driver first appeared in 64.Fx 5.0 . 65.Sh BUGS 66Crypto device drivers must be compiled specially to make use of this driver; 67this should not be necessary. 68This feature might better be integrated into the 69.Xr random 4 70subsystem where it can be applied to devices that claim to supply 71.Dq "pure entropy" . 72