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K5SRVUTIL(1)                     MIT Kerberos                     K5SRVUTIL(1)


NAME

       k5srvutil - host key table (keytab) manipulation utility


SYNOPSIS

       k5srvutil operation [-i] [-f filename] [-e keysalts]


DESCRIPTION

       k5srvutil allows an administrator to list keys currently in a keytab,
       to obtain new keys for a principal currently in a keytab, or to delete
       non-current keys from a keytab.

       operation must be one of the following:

       list   Lists the keys in a keytab, showing version number and principal
              name.

       change Uses the kadmin protocol to update the keys in the Kerberos
              database to new randomly-generated keys, and updates the keys in
              the keytab to match.  If a key's version number doesn't match
              the version number stored in the Kerberos server's database,
              then the operation will fail.  If the -i flag is given,
              k5srvutil will prompt for confirmation before changing each key.
              If the -k option is given, the old and new keys will be
              displayed.  Ordinarily, keys will be generated with the default
              encryption types and key salts.  This can be overridden with the
              -e option.  Old keys are retained in the keytab so that existing
              tickets continue to work, but delold should be used after such
              tickets expire, to prevent attacks against the old keys.

       delold Deletes keys that are not the most recent version from the
              keytab.  This operation should be used some time after a change
              operation to remove old keys, after existing tickets issued for
              the service have expired.  If the -i flag is given, then
              k5srvutil will prompt for confirmation for each principal.

       delete Deletes particular keys in the keytab, interactively prompting
              for each key.

       In all cases, the default keytab is used unless this is overridden by
       the -f option.

       k5srvutil uses the kadmin(1) program to edit the keytab in place.


ENVIRONMENT

       See kerberos(7) for a description of Kerberos environment variables.


SEE ALSO

       kadmin(1), ktutil(1), kerberos(7)


AUTHOR

       MIT


COPYRIGHT

       1985-2023, MIT

1.21.2                                                            K5SRVUTIL(1)

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