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.Dd May 11, 2020 27.Dt RNDTEST 4 28.Os 29.Sh NAME 30.Nm rndtest 31.Nd FIPS 140-2 random number generator test monitor 32.Sh SYNOPSIS 33.Cd "device rndtest" 34.Sh DESCRIPTION 35The 36.Nm 37driver 38.Dq "hooks up" 39to hardware crypto devices to monitor the 40entropy data passed to the 41.Xr random 4 42subsystem. 43This data is periodically tested for FIPS 140-2 compliance and 44statistics are collected. 45If the harvested entropy fails any of the FIPS test suite, then 46it is discarded and testing is continuously applied until 47.Dq "good data" 48is received from the device. 49Failures are optionally reported on the console. 50.Sh SEE ALSO 51.Xr crypto 4 , 52.Xr hifn 4 , 53.Xr random 4 , 54.Xr safe 4 , 55.Xr crypto 9 56.Sh HISTORY 57The idea for this and the original code came from 58.An "Jason L. Wright" . 59The 60.Nm 61device driver first appeared in 62.Fx 5.0 . 63.Sh BUGS 64Crypto device drivers must be compiled specially to make use of this driver; 65this should not be necessary. 66This feature might better be integrated into the 67.Xr random 4 68subsystem where it can be applied to devices that claim to supply 69.Dq "pure entropy" . 70