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hifn (4)
  • >> hifn (4) ( FreeBSD man: Специальные файлы /dev/* )

  • BSD mandoc
     

    NAME

    
    
    hifn
    
     - Hifn 7751/7951/7811/7955/7956 crypto accelerator
    
     
    

    SYNOPSIS

    To compile this driver into the kernel, place the following lines in your kernel configuration file:
    device crypto device cryptodev device hifn

    Alternatively, to load the driver as a module at boot time, place the following line in loader.conf5:

    hifn_load="YES"
    
     

    DESCRIPTION

    The driver supports various cards containing the Hifn 7751, 7951, 7811, 7955, and 7956 chipsets.

    The driver registers itself to accelerate DES, Triple-DES, AES (7955 and 7956 only), ARC4, MD5, MD5-HMAC, SHA1, and SHA1-HMAC operations for ipsec(4) and crypto(4).

    The Hifn 7951 7811 7955 and 7956 will also supply data to the kernel random(4) subsystem.  

    HARDWARE

    The driver supports various cards containing the Hifn 7751, 7951, 7811, 7955, and 7956 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/ Supports the most IPsec sessions, with 1MB SRAM.
    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
    See http://www.soekris.com/ Contains a 7955 and supports symmetric and random number operations.

     

    SEE ALSO

    crypt(3), crypto(4), intro(4), ipsec(4), random(4), crypto(9)  

    CAVEATS

    The Hifn 9751 shares the same PCI ID. This chip is basically a 7751, but with the cryptographic functions missing. Instead, the 9751 is only capable of doing compression. Since we do not currently attempt to use any of these chips to do compression, the 9751-based cards are not useful.

    Support for the 7955 and 7956 is incomplete; the asymmetric crypto facilities are to be added and the performance is suboptimal.  

    HISTORY

    The device driver appeared in Ox 2.7 . The device driver was imported to Fx 5.0 .  

    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.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    HARDWARE
    SEE ALSO
    CAVEATS
    HISTORY
    BUGS


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