NAME

       wa_keyring - WebAuth keyring manipulation tool

SYNOPSIS

       wa_keyring [-hv] -f file command [arg ...]

       wa_keyring -f keyring add valid-after

       wa_keyring -f keyring gc oldest-valid-after-to-keep

       wa_keyring -f keyring list

       wa_keyring -f keyring remove id

DESCRIPTION

       wa_keyring is a command line tool to manage WebAuth key ring files, which contain the
       private AES keys used by mod_webauth and mod_webkdc.  It supports the following individual
       commands:

       add valid-after
           Adds a new key to the key ring.  valid-after uses the format:

               nnnn[s|m|h|d|w]

           to indicate a time relative to the current time. The units for the time are specified
           by appending a single letter.  That letter can be any of s, m, h, d, or w, which
           correspond to seconds, minutes, hours, days, and weeks respectively.

           For example: 10d is 10 days from the current time, and -60d is 60 days before the
           current time.

       gc oldest-valid-after-to-keep
           Garbage collects (removes) old keys on the key ring.  Any keys with a valid-after date
           older then the specified time will be removed from the key ring.

           The format for oldest-valid-after-to-keep is the same as valid-after from the add
           command.  Note that this means that times given to the gc command should generally be
           negative, to remove keys that have expired in the past.

       list
           Lists all the keys in the key ring.  By default, a brief listing is used, but a
           verbose listing can be requested with the -v option.

           The following fields are present in a short listing:

           id  The index/position of the key in the key ring.

           Created
               The date the key was created.

           Valid after
               The date at which the key becomes valid (in other words, the point at which the
               WebAuth server will start using it to encrypt and decrypt new data).

           Fingerprint
               The MD5 digest of the key data.  Used to compare keys in two key rings.

           The following fields are present in the long listing:

           Key-Id
               The index/position of the key in the key ring.

           Created
               The date the key was created.

           Valid-After
               The date at which the key becomes valid (in other words, the point at which the
               WebAuth server will start using it to encrypt and decrypt new data).

           Key-Type
               The type of key.  Currently, AES is the only supported key type.

           Key-Size
               Length in bytes of the key.

           Fingerprint
               The MD5 digest of the key data. Used to compare keys in two key rings.

       remove id
           Remove the key with ID id from the key ring.

       For any of the commands that change the keyring, wa_keyring must have write access to the
       directory containing the keyring, since keyrings are updated by writing out the new file
       to a separate name and then atomically replacing the file.

       Ownership (user and group) of the existing keyring file will be preserved if possible
       without overwriting the existing file.  Permissions will also be preserved, with the
       exception that permissions will not be copied to the new file if the old file was group-
       readable or group-writable and setting the group ownership failed.

EXAMPLES

       Add a key to the keyring valid as of the current time:

           wa_keyring -f keyring add 0d

       Add a key to the keyring that will be valid three days from now:

           wa_keyring -f keyring add 3d

       Remove keys from the key ring that became invalid more than 90 days ago:

           wa_keyring -f keyring gc -90d

       Remove the first key in the keyring.

           wa_keyring -f keyring remove 0

       Display a verbose listing of all of the keys in the key ring:

           wa_keyring -f keyring -v list

       Note that a WebAuth server will normally manage its keyring file by itself, and wa_keyring
       is normally only used for debugging purposes.  However, if you are setting up a load-
       balanced pool of servers that need to all share the same keys, turn off automatic keyring
       handling by putting the line:

           WebAuthKeyringAutoUpdate off

       to your Apache configuration, running a script periodically from cron on one server that
       does something like:

           wa_keyring -f keyring gc -90d
           wa_keyring -f keyring add 2d

       and then copying (in a secure manner!) the new keyring file to all of the other servers.

AUTHOR

       Roland Schemers <schemers@stanford.edu>

COPYRIGHT AND LICENSE

       Copyright 2002, 2004, 2005, 2014 The Board of Trustees of the Leland Stanford Junior
       University

       Copying and distribution of this file, with or without modification, are permitted in any
       medium without royalty provided the copyright notice and this notice are preserved.  This
       file is offered as-is, without any warranty.