padlock — driver for the cryptographic functions and RNG in VIA C3, C7 and Eden processors

       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>.

Debian                                          February 8, 2010                                      PADLOCK(4)

       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.

       The padlock driver first appeared in OpenBSD.  The first FreeBSD release to include it was FreeBSD 6.0.

       padlock — driver for the cryptographic functions and RNG in VIA C3, C7 and Eden processors

crypt(3), crypto(4), intro(4), ipsec(4), random(4), crypto(9)

       To compile this driver into the kernel, place the following lines in your kernel configuration file:

             devicecryptodevicepadlock

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

             padlock_load="YES"