crconf Files

CRCONF(8)                            Linux                           CRCONF(8)



NAME
       crconf - Linux cryptoapi configuration tool


SYNOPSIS
       crconf COMMAND OBJECT

       COMMAND := { add | del | update | show }

       OBJECT := { alg | driver | all }

       crconf  { add | del | update } driver "DRIVER" { type "TYPE" | priority
       "PRIORITY" }

       crconf { add | del } alg "ALG" type "TYPE"

       crconf show { all | driver "DRIVER" }


DESCRIPTION
       crconf is a small commandline tool to configure the Linux crypto layer.
       Basically  it  is  used  change the system default configuration of the
       crypto layer in the Linux kernel.


ALGORITHMS AND ALGORITHM DRIVERS
       The crypto algorithms or algorithm drivers are specified by the  string
       that  identifies  the  algorithm  or  the driver in the kernel. E.g. an
       algorithm would be "sha1". A driver is a certain implementation  of  an
       algorithm  e.g.   "sha1-generic"  for  the  generic C implementation of
       sha1.


ALGORITHM TYPE
       The  algorithm   types   are   defined   in   the   linux   kernel   in
       include/linux/crypto.h.   The parameter for the type argument is one of
       the following numbers (linux-3.3):

       CRYPTO_ALG_TYPE_CIPHER          1
       CRYPTO_ALG_TYPE_COMPRESS        2
       CRYPTO_ALG_TYPE_AEAD            3
       CRYPTO_ALG_TYPE_BLKCIPHER       4
       CRYPTO_ALG_TYPE_ABLKCIPHER      5
       CRYPTO_ALG_TYPE_GIVCIPHER       6
       CRYPTO_ALG_TYPE_DIGEST          8
       CRYPTO_ALG_TYPE_HASH            8
       CRYPTO_ALG_TYPE_SHASH           9
       CRYPTO_ALG_TYPE_AHASH           10
       CRYPTO_ALG_TYPE_RNG             12
       CRYPTO_ALG_TYPE_PCOMPRESS       15


ALGORITHM DRIVER PRIORITY
       The priority of an algorithm driver determines  which  driver  will  be
       used  if there are more than one algorithm drivers present for the same
       algorithm.  The parameter of the priority argument is an unsigned inte‐
       ger. The driver with the highest priority is used.


COMMANDS
       add    Add an instance of a crypto algorithm or driver.

       del    Delete an instance of a crypto algorithm or driver.

       update Update an instance of a crypto algorithm driver.

       show   Show  all  instantiated crypto algorithms (drivers) or a certain
              algorithm driver.


OBJECTS
       alg    Configure a crypto algorithm. Valid commands are add and del.

       driver Configure a crypto algorithm driver. Valid commands are add, del
              update, and show.

       all    Only valid for the show command.


AUTHOR
       Steffen Klassert <steffen.klassert@secunet.com>



crconf                           16 March 2012                       CRCONF(8)