197ff4c35b
AES-CBC OpenSSL assembly is used underneath. The glue layer(ossl_aes.c) is based on CHACHA20 implementation. Contrary to the SHA and CHACHA20, AES OpenSSL assembly logic does not have a fallback implementation in case CPU doesn't support required instructions. Because of that CPU caps are checked during initialization and AES support is advertised only if available. The feature is available on all architectures that ossl supports: i386, amd64, arm64. The biggest advantage of this patch over existing solutions (aesni(4) and armv8crypto(4)) is that it supports SHA, allowing for ETA operations. Sponsored by: Stormshield Obtained from: Semihalf Reviewed by: jhb (previous version) Differential revision: https://reviews.freebsd.org/D32099
116 lines
2.8 KiB
Groff
116 lines
2.8 KiB
Groff
.\" Copyright (c) 2020 Netflix, Inc
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer,
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.\" without modification.
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.\" 2. Redistributions in binary form must reproduce at minimum a disclaimer
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.\" similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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.\" redistribution must be conditioned upon including a substantially
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.\" similar Disclaimer requirement for further binary redistribution.
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.\"
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.\" NO WARRANTY
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.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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.\" LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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.\" AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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.\" THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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.\" OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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.\" IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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.\" THE POSSIBILITY OF SUCH DAMAGES.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd September 24, 2021
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.Dt OSSL 4
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.Os
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.Sh NAME
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.Nm ossl
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.Nd "driver using OpenSSL assembly routines"
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device crypto"
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.Cd "device cryptodev"
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.Cd "device ossl"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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ossl_load="YES"
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.Ed
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.Sh DESCRIPTION
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The OpenSSL distribution includes architecture-specific
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implementations for some commonly used cryptographic algorithms.
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This driver adds a wrapper around these routines permitting them to be
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used by in-kernel cryptography consumers such as kernel TLS and IPsec.
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.Pp
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The
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.Nm
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driver includes architecture-specific implementations for the following
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architectures:
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.Pp
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.Bl -bullet -compact
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.It
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arm64
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.It
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amd64
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.It
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i386
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.El
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.Pp
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The
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.Nm
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driver includes support for the following algorithms:
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.Pp
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.Bl -bullet -compact
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.It
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AES-CBC
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.It
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ChaCha20
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.It
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ChaCha20-Poly1305 (RFC 8439)
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.It
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Poly1305
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.It
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SHA1
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.It
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SHA1-HMAC
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.It
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SHA2-224
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.It
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SHA2-224-HMAC
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.It
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SHA2-256
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.It
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SHA2-256-HMAC
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.It
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SHA2-384
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.It
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SHA2-384-HMAC
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.It
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SHA2-512
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.It
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SHA2-512-HMAC
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.El
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.Sh SEE ALSO
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.Xr crypto 4 ,
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.Xr intro 4 ,
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.Xr ipsec 4 ,
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.Xr crypto 7 ,
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.Xr crypto 9
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.Sh HISTORY
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The
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.Nm
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driver first appeared in
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.Fx 13.0 .
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