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1.\" Copyright (c) 2005 Christian Brueffer
2.\" All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.

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17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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24.\"
25.\" $FreeBSD: head/share/man/man4/man4.i386/padlock.4 160502 2006-07-19 16:31:09Z mr $
26.\"
27.Dd July 19, 2006
28.Dt PADLOCK 4 i386
29.Os
30.Sh NAME
31.Nm padlock
32.Nd "driver for the cryptographic functions and RNG in VIA C3, C7 and Eden processors"
33.Sh SYNOPSIS
34To compile this driver into the kernel,
35place the following lines in your
36kernel configuration file:
37.Bd -ragged -offset indent
38.Cd "device crypto"
39.Cd "device padlock"
40.Ed
41.Pp
42Alternatively, to load the driver as a
43module at boot time, place the following line in
44.Xr loader.conf 5 :
45.Bd -literal -offset indent
46padlock_load="YES"
47.Ed
48.Sh DESCRIPTION
49The C3 and Eden processor series from VIA include hardware acceleration for
50AES.
51The C7 series includes hardware acceleration for AES, SHA and RSA.
52All of the above processor series include a hardware random number generator.
53.Pp
54The
55.Nm
56driver registers itself to accelerate AES operations for
57.Xr crypto 4 .
58It also registers itself to accelerate various HMAC algorithms, although
59there is no
60hardware acceleration for those algorithms.
61This is only needed, so
62.Nm
63can work with
64.Xr fast_ipsec 4 .
65.Pp
66The hardware random number generator supplies data for the kernel
67.Xr random 4
68subsystem.
69.Sh HISTORY
70The
71.Nm
72driver first appeared in
73.Ox .
74The first
75.Fx
76release to include it was
77.Fx 6.0 .
78.Sh SEE ALSO
79.Xr crypt 3 ,
80.Xr crypto 4 ,
81.Xr fast_ipsec 4 ,
82.Xr intro 4 ,
83.Xr random 4 ,
84.Xr crypto 9
85.Sh AUTHORS
86.An -nosplit
87The
88.Nm
89driver was written by
90.An Jason Wright Aq jason@OpenBSD.org .
91It was ported to
92.Fx
93by
94.An Pawel Jakub Dawidek Aq pjd@FreeBSD.org .
95This manual page was written by
96.An Christian Brueffer Aq brueffer@FreeBSD.org .