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+.\" Copyright (c) 2016 The FreeBSD Foundation
+.\"
+.\" This software was developed by Andrew Turner under
+.\" sponsorship from the FreeBSD Foundation.
+.\"
+.\" 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.
+.\"
+.Dd July 29, 2020
+.Dt ARMV8CRYPTO 4 aarch64
+.Os
+.Sh NAME
+.Nm armv8crypto
+.Nd "driver for the AES accelerator on ARM CPUs"
+.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 armv8crypto"
+.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
+armv8crypto_load="YES"
+.Ed
+.Sh DESCRIPTION
+Starting with the ARMv8 architecture ARM Limited has added optional
+cryptography instructions to accelerate AES, SHA-1, SHA-2, and
+finite field arithmetic.
+.Pp
+The processor capability is reported as AES in the Instruction Set
+Attributes 0 line at boot.
+The
+.Nm
+driver does not attach on systems that lack the required CPU capability.
+.Pp
+The
+.Nm
+driver registers itself to accelerate AES operations for
+.Xr crypto 4 .
+.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 HISTORY
+The
+.Nm
+driver first appeared in
+.Fx 11.0 .
+.Sh AUTHORS
+.An -nosplit
+The
+.Nm
+driver was written by
+.An Andrew Turner Aq Mt andrew@FreeBSD.org .