HIFN(4) BSD Programmer's Manual HIFN(4)
hifn - Hifn 7751/7811/7951/7955/7956/9751 crypto accelerator
hifn* at pci? dev ? function ?
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 No longer being made. Came as 128KB SRAM model, or 2MB DRAM model. Hifn 7751 Reference board with 512KB SRAM. PowerCrypt See http://www.powercrypt.com/. Comes with 512KB SRAM. XL-Crypt See http://www.powercrypt.com/. Only board based on 7811 (which is faster than 7751 and has a random number generator). NetSec 7751 See http://www.netsec.net/. 7751 board with 1MB of SRAM. No longer in production. Soekris Engineering vpn1201 and vpn1211 See http://www.soekris.com/. Contains a 7951 and supports symmetric and random number operations. Soekris Engineering vpn1401 and vpn1411 Contains a 7955 and supports symmetric (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 sup- ports LZS. The Hifn 7811, Hifn 7951, Hifn 7955, and Hifn 7956 will also supply data to the kernel random(4) subsystem.
crypt(3), crypto(4), intro(4), ipsec(4), random(4), crypto(9)
The hifn device driver appeared in OpenBSD 2.7.
The 7751 chip starts out at initialization by only supporting compres- sion. A proprietary algorithm, which has been reverse engineered, is re- quired to unlock the cryptographic functionality of the chip. It is pos- sible 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. MirOS BSD #10-current March 16, 2000 1
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