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aesni(4) [freebsd man page]

AESNI(4)						   BSD Kernel Interfaces Manual 						  AESNI(4)

NAME
aesni -- driver for the AES accelerator on Intel CPUs SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: device crypto device aesni Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): aesni_load="YES" DESCRIPTION
Starting with some models of Core i5/i7, Intel processors implement a new set of instructions called AESNI. The set of six instructions accelerates the calculation of the key schedule for key lengths of 128, 192, and 256 of the Advanced Encryption Standard (AES) symmetric cipher, and provides a hardware implementation of the regular and the last encryption and decryption rounds. The processor capability is reported as AESNI in the Features2 line at boot. The aesni driver does not attach on systems that lack the required CPU capability. The aesni driver registers itself to accelerate AES operations for crypto(4). Besides speed, the advantage of using the aesni driver is that the AESNI operation is data-independent, thus eliminating some attack vectors based on measuring cache use and timings typically present in table-driven implementations. SEE ALSO
crypt(3), crypto(4), intro(4), ipsec(4), padlock(4), random(4), crypto(9) HISTORY
The aesni driver first appeared in FreeBSD 9.0. AUTHORS
The aesni driver was written by Konstantin Belousov <kib@FreeBSD.org>. The key schedule calculation code was adopted from the sample pro- vided by Intel and used in the analogous OpenBSD driver. BSD
September 6, 2010 BSD

Check Out this Related Man Page

UBSEC(4)						   BSD Kernel Interfaces Manual 						  UBSEC(4)

NAME
ubsec -- Broadcom and BlueSteel uBsec 5x0x crypto accelerator SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: device crypto device cryptodev device ubsec Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): ubsec_load="YES" DESCRIPTION
The ubsec driver supports cards containing Broadcom and BlueSteel uBsec 5x0x crypto accelerator chips. The ubsec driver registers itself to accelerate DES, Triple-DES, MD5-HMAC, and SHA1-HMAC operations for ipsec(4) and 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) subsys- tem. On all models except the Bluesteel 5501 and Broadcom 5801, the driver registers itself to provide random data to the random(4) subsystem. HARDWARE
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 an 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. This is the chip found on the Sun Crypto Accelerator 1000. Broadcom BCM5822 Faster version of the BCM5820. Broadcom BCM5823 A BCM5822 with AES capability. Broadcom BCM5825 Faster version of the BCM5823. SEE ALSO
crypt(3), crypto(4), intro(4), ipsec(4), random(4), crypto(9) HISTORY
The ubsec device driver appeared in OpenBSD 2.8. The ubsec device driver was imported to FreeBSD 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 disclo- sure of programming information from Broadcom. BSD
May 16, 2009 BSD

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