NAME
padlock —
driver for the cryptographic functions
and RNG in VIA C3, C7 and Eden processors
SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file:
device crypto
device padlockAlternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
padlock_load="YES"
DESCRIPTION
The C3 and Eden processor series from VIA include hardware acceleration for AES. The C7 series includes hardware acceleration for AES, SHA1, SHA256 and RSA. All of the above processor series include a hardware random number generator.The padlock driver registers itself to
accelerate AES operations and, if available, HMAC/SHA1 and HMAC/SHA256 for
crypto(4). It also registers itself to accelerate other HMAC
algorithms, although there is no hardware acceleration for those algorithms.
This is only needed so padlock can work with
ipsec(4).
The hardware random number generator supplies data for the kernel random(4) subsystem.
SEE ALSO
crypt(3), crypto(4), intro(4), ipsec(4), random(4), crypto(9)
HISTORY
The padlock driver first appeared in
OpenBSD. The first FreeBSD
release to include it was FreeBSD 6.0.
AUTHORS
The padlock driver with AES encryption
support was written by Jason Wright
<jason@OpenBSD.org>.
It was ported to FreeBSD and then extended to
support SHA1 and SHA256 by Pawel Jakub Dawidek
<pjd@FreeBSD.org>.
This manual page was written by Christian Brueffer
<brueffer@FreeBSD.org>.