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 padlock
Alternatively, to load the driver as a module at boot time, place the following
line in
loader.conf(5):
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⟩.