1.\" $OpenBSD: ccp.4,v 1.6 2024/09/04 11:12:53 jsg Exp $ 2.\" 3.\" Copyright (c) 2018 David Gwynne <dlg@openbsd.org> 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.Dd $Mdocdate: September 4 2024 $ 18.Dt CCP 4 19.Os 20.Sh NAME 21.Nm ccp 22.Nd AMD cryptographic co-processor 23.Sh SYNOPSIS 24.Cd "ccp* at acpi?" 25.Cd "ccp* at fdt?" 26.Cd "ccp* at pci?" 27.Sh DESCRIPTION 28AMD cryptographic co-processor devices provide offload for various 29cryptographic algorithms, offload of zlib compression and decompression, 30and a random number generator. 31.Pp 32The 33.Nm 34driver supports feeding output of the random number generator into 35the kernel entropy pool. 36.Sh SEE ALSO 37.Xr intro 4 , 38.Xr psp 4 , 39.Xr random 4 , 40.Xr arc4random 9 41.Sh HISTORY 42The 43.Nm 44driver first appeared in 45.Ox 6.4 . 46.Sh AUTHORS 47.An -nosplit 48The 49.Nm 50driver was written by 51.An David Gwynne Aq Mt dlg@openbsd.org . 52