Manual Pages for UNIX Operating System command usage for man encode_keychange

Net-SNMP                                      encode_keychange(1)



NAME
     encode_keychange - produce the KeyChange string for SNMPv3

SYNOPSIS
     encode_keychange -t md5|sha1 [OPTIONS]

DESCRIPTION
     encode_keychange produces a KeyChange string using  the  old
     and  new  passphrases  as described in Section 5 of RFC 2274
     "User-based Security Model (USM) for version 3 of the Simple
     Network  Management  Protocol (SNMPv3)". -t option is manda-
     tory and specifies the hash transform type to use.

     The transform is used to convert passphrase  to  master  key
     for  a  given user (Ku), convert master key to the localized
     key (Kul), and to hash the old Kul with the random bits.

     Passphrases are obtained by examining a  number  of  sources
     until success (in order listed):

          command line options (see -N and -O options below);

          the file $HOME/.snmp/passphrase.ek  which  should  only
          contain two lines with old and new passphrase;

          standard input -or-  user input from the terminal.

OPTIONS
     -E [0x] EngineID used for Kul generation.
           is intepreted as a hex string when preceeded
          by  0x, otherwise it is treated as a text string. If no
           is specified, it  is  constructed  from  the
          first IP address for the local host.

     -f   Force passphrases to be read from standard input.

     -h   Display the help message.

     -N ""
          Passphrase used to generate the new Ku.

     -O ""
          Passphrase used to generate the old Ku.

     -P   Turn off the prompt for passphrases when  getting  data
          from standard input.

     -v   Be verbose.

     -V   Echo passphrases to terminal.





V5.4.1              Last change: 16 Nov 2006                    1






Net-SNMP                                      encode_keychange(1)



SEE ALSO
     The localized key method is defined in  RFC  2274,  Sections
     2.6 and A.2, and originally documented in

          U. Blumenthal, N. C. Hien, B. Wijnen,  "Key  Derivation
          for  Network  Management  Applications",  IEEE  Network
          Magazine, April/May issue, 1997.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:

     _______________________________________________________
    |   ATTRIBUTE TYPE   |          ATTRIBUTE VALUE        |
    |____________________|__________________________________|_
    | Availability       |  system/management/snmp/net-snmp|
    |____________________|__________________________________|_
    | Interface Stability|  Volatile                       |
    |____________________|_________________________________|

NOTES
     Source for net-snmp is available on http://opensolaris.org.

































V5.4.1              Last change: 16 Nov 2006                    2