131 lines
3.9 KiB
Groff
131 lines
3.9 KiB
Groff
.\"-
|
|
.\" Copyright (c) 2003 Sam Leffler, Errno Consulting
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"/
|
|
.Dd July 29, 2020
|
|
.Dt SAFE 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm safe
|
|
.Nd SafeNet crypto accelerator
|
|
.Sh SYNOPSIS
|
|
To compile this driver into the kernel,
|
|
place the following lines in your
|
|
kernel configuration file:
|
|
.Bd -ragged -offset indent
|
|
.Cd "device crypto"
|
|
.Cd "device cryptodev"
|
|
.Cd "device safe"
|
|
.Ed
|
|
.Pp
|
|
Alternatively, to load the driver as a
|
|
module at boot time, place the following line in
|
|
.Xr loader.conf 5 :
|
|
.Bd -literal -offset indent
|
|
safe_load="YES"
|
|
.Ed
|
|
.Pp
|
|
.Nm sysctl Va hw.safe.debug
|
|
.Nm sysctl Va hw.safe.dump
|
|
.Nm sysctl Va hw.safe.rnginterval
|
|
.Nm sysctl Va hw.safe.rngbufsize
|
|
.Nm sysctl Va hw.safe.rngmaxalarm
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
driver supports cards containing SafeNet crypto accelerator chips.
|
|
.Pp
|
|
The
|
|
.Nm
|
|
driver registers itself to accelerate AES,
|
|
SHA1-HMAC, and NULL operations for
|
|
.Xr ipsec 4
|
|
and
|
|
.Xr crypto 4 .
|
|
.Pp
|
|
On all models, the driver registers itself to provide random data to the
|
|
.Xr random 4
|
|
subsystem.
|
|
Periodically the driver will poll the hardware RNG and retrieve
|
|
data for use by the system.
|
|
If the driver detects that the hardware RNG is resonating with any local
|
|
signal, it will reset the oscillators that generate random data.
|
|
Three
|
|
.Xr sysctl 8
|
|
settings control this procedure:
|
|
.Va hw.safe.rnginterval
|
|
specifies the time, in seconds, between polling operations,
|
|
.Va hw.safe.rngbufsize
|
|
specifies the number of 32-bit words to retrieve on each poll,
|
|
and
|
|
.Va hw.safe.rngmaxalarm
|
|
specifies the threshold for resetting the oscillators.
|
|
.Pp
|
|
When the driver is compiled with
|
|
.Dv SAFE_DEBUG
|
|
defined, two
|
|
.Xr sysctl 8
|
|
variables are provided for debugging purposes:
|
|
.Va hw.safe.debug
|
|
can be set to a non-zero value to enable debugging messages to be sent
|
|
to the console for each cryptographic operation,
|
|
.Va hw.safe.dump
|
|
is a write-only variable that can be used to force driver state to be sent
|
|
to the console.
|
|
Set this variable to
|
|
.Dq Li ring
|
|
to dump the current state of the descriptor ring,
|
|
to
|
|
.Dq Li dma
|
|
to dump the hardware DMA registers,
|
|
or
|
|
to
|
|
.Dq Li int
|
|
to dump the hardware interrupt registers.
|
|
.Sh HARDWARE
|
|
The
|
|
.Nm
|
|
driver supports cards containing any of the following chips:
|
|
.Bl -tag -width "SafeNet 1141" -offset indent
|
|
.It SafeNet 1141
|
|
The original chipset.
|
|
Supports DES, Triple-DES, AES, MD5, and SHA-1
|
|
symmetric crypto operations, RNG, public key operations, and full IPsec
|
|
packet processing.
|
|
.It SafeNet 1741
|
|
A faster version of the 1141.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr crypt 3 ,
|
|
.Xr crypto 4 ,
|
|
.Xr intro 4 ,
|
|
.Xr ipsec 4 ,
|
|
.Xr random 4 ,
|
|
.Xr crypto 7 ,
|
|
.Xr crypto 9
|
|
.Sh BUGS
|
|
Public key support is not implemented.
|