HIFN(4) OpenBSD Programmer's Manual HIFN(4)NAMEhifn - Hifn 7751/7811/7951/7955/7956/9751 crypto accelerator
SYNOPSIS
hifn* at pci?
DESCRIPTION
The hifn driver supports various cards containing the Hifn 7751, Hifn
7811, Hifn 7951, Hifn 7955, Hifn 7956, or Hifn 9751 chipsets, such as
Invertex AEON Comes as 128KB SRAM model, or 2MB DRAM model.
Hifn 7751 Reference board with 512KB SRAM.
PowerCrypt Comes with 512KB SRAM.
PowerCrypt 5x Contains a 7956 and supports symmetric encryption
(including AES), random number, and modular
exponentiation operations.
XL-Crypt Only board based on 7811 (which is faster than 7751
and has a random number generator).
NetSec 7751 7751 board with 1MB of SRAM.
Soekris Engineering vpn1201 and vpn1211
Contains a 7951 and supports symmetric encryption
and random number operations.
Soekris Engineering vpn1401 and vpn1411
Contains a 7955 and supports symmetric encryption
(including AES), random number, and modular
exponentiation operations.
Hifn 9751 Reference board with 512KB SRAM. This is really a
Hifn 7751 which only supports compression.
The Hifn 7751, Hifn 7811, Hifn 7951, Hifn 7955, and Hifn 7956 chips all
support acceleration of DES, Triple-DES, ARC4, MD5, MD5-HMAC, SHA1, SHA1-
HMAC, and LZS operations for ipsec(4) and crypto(4). The Hifn 7955 and
Hifn 7956 chips additionally support AES-CBC. The Hifn 9751 only
supports LZS.
The Hifn 7811, Hifn 7951, Hifn 7955, and Hifn 7956 will also supply data
to the kernel random(4) subsystem.
SEE ALSOcrypt(3), crypto(4), intro(4), ipsec(4), pci(4), random(4), crypto(9)HISTORY
The hifn device driver appeared in OpenBSD 2.7.
BUGS
The 7751 chip starts out at initialization by only supporting
compression. A proprietary algorithm, which has been reverse engineered,
is required to unlock the cryptographic functionality of the chip. It is
possible for vendors to make boards which have a lock ID not known to the
driver, but all vendors currently just use the obvious ID which is 13
bytes of 0.
The 7951, 7955 and 7956 have support for public key operations which are
not yet supported.
OpenBSD 4.9 March 24, 2009 OpenBSD 4.9
