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 exponentation 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.
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.