|HIFN(4)||Device Drivers Manual||HIFN(4)|
hifn — Hifn
7751/7811/7951/7955/7956/9751 crypto accelerator
hifn* at pci?
hifn driver supports various cards
containing the Hifn 7751, Hifn 7811, Hifn 7951, Hifn 7955, Hifn 7956, or
Hifn 9751 chipsets, such as:
The Hifn 7751, Hifn 7811, Hifn 7951, Hifn 7955, and Hifn 7956 chips all support acceleration of Triple-DES, MD5-HMAC, SHA1-HMAC, and LZS operations for ipsec(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.
hifn device driver appeared in
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.
|September 27, 2016||OpenBSD-current|