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UBSEC(4)              DragonFly Kernel Interfaces Manual              UBSEC(4)


NAME

     ubsec -- Broadcom and BlueSteel uBsec 5x0x crypto accelerator


SYNOPSIS

     device ubsec


DESCRIPTION

     The ubsec driver supports cards containing any of the following chips:

           Bluesteel 5501    The original chipset, no longer made.  This
                             extremely rare unit was not very fast, lacked a
                             RNG, and had a number of other bugs.

           Bluesteel 5601    A faster and fixed version of the original, with
                             a random number unit and large number engine
                             added.

           Broadcom BCM5801  A BCM5805 without public key engine or random
                             number generator.

           Broadcom BCM5802  A slower version of the BCM5805.

           Broadcom BCM5805  Faster version of Bluesteel 5601.

           Broadcom BCM5820  64 bit version of the chip, and significantly
                             more advanced.

           Broadcom BCM5821  Faster version of the BCM5820.

           Broadcom BCM5822  Faster version of the BCM5820.

           Broadcom BCM5823  A BCM5822 with AES capability.

           Broadcom BCM5825  Faster version of the BCM5823.

     The ubsec driver registers itself to accelerate DES, Triple-DES,
     MD5-HMAC, and SHA1-HMAC operations for crypto(4).

     On those models which contain a public key engine (almost all of the more
     recent ones), this feature is registered with the crypto(4) subsystem.

     On all models except the Bluesteel 5501 and Broadcom 5801, the driver
     registers itself to provide random data to the random(4) subsystem.


SEE ALSO

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


HISTORY

     The ubsec device driver appeared in OpenBSD 2.8.  The ubsec device driver
     was imported to FreeBSD in 5.0.


BUGS

     The BCM5801 and BCM5802 have not actually been tested.  The AES
     capability of the BCM5823 is not yet supported; it is awaiting public
     disclosure of programming information from Broadcom.

DragonFly 5.1                   April 21, 2018                   DragonFly 5.1

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