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PADLOCK(4)		     Kernel Interfaces Manual		      PADLOCK(4)

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):

	   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  num-
     ber generator.

     The  padlock  driver  registers itself to accelerate AES operations and, if
     available, HMAC/SHA1 and HMAC/SHA256 for crypto(4).  It also registers  it-
     self to accelerate other HMAC algorithms, although there is no hardware ac-
     celeration  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(7), 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>.

FreeBSD ports 15.1		  July 29, 2020 		      PADLOCK(4)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=padlock&sektion=4&manpath=FreeBSD+15.1-RELEASE+and+Ports>

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