1.\" $OpenBSD: octrng.4,v 1.5 2020/04/06 00:01:08 pirofti Exp $ 2.\" 3.\" Copyright (c) 2013 Paul Irofti <paul@irofti.net> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.\" 18.Dd $Mdocdate: April 6 2020 $ 19.Dt OCTRNG 4 octeon 20.Os 21.Sh NAME 22.Nm octrng 23.Nd octeon random number generator 24.Sh SYNOPSIS 25.Cd "octrng* at iobus?" 26.Sh DESCRIPTION 27The 28.Nm 29driver supports the random number generator found on the CN50XX chip. 30.Pp 31After the 5 seconds it takes for the device to be initialized, the 32.Nm 33driver feeds the random subsystem's entropy pool 32 bits of data every 3410 milliseconds through the 35.Xr enqueue_randomness 9 36API. 37.Sh SEE ALSO 38.Xr intro 4 , 39.Xr arc4random 9 40.Sh HISTORY 41The 42.Nm 43driver first appeared in 44.Ox 5.5 . 45.Sh AUTHORS 46.An -nosplit 47The 48.Nm 49driver was written by 50.An Paul Irofti Aq Mt paul@irofti.net . 51