EDIT THIS FILE WITH CAUTION (ntp.man)

It has been AutoGen-ed December 24, 2013 at 11:38:07 AM by AutoGen 5.18.3pre5
From the definitions ntp.keys.def
and the template file agman-file.tpl
.Sh NAME .Nm ntp.keys .Nd NTP symmetric key file format
ntp.keys - NTP symmetric key file format configuration file . it 1 an-trap . if \\n[.$] \,\\$*\/ .. /etc/ntp.keys

This document describes the format of an NTP symmetric key file. For a description of the use of this type of file, see the "Authentication Support" section of the ntp.conf(5)\f[] page. ntpd(8)\f[] reads its keys from a file specified using the \f\*[B-Font]-k\f[] command line option or the \f\*[B-Font]keys\f[] statement in the configuration file. While key number 0 is fixed by the NTP standard (as 56 zero bits) and may not be changed, one or more keys numbered between 1 and 65534 may be arbitrarily set in the keys file. The key file uses the same comment conventions as the configuration file. Key entries use a fixed format of the form \f\*[I-Font]keyno\f[] \f\*[I-Font]type\f[] \f\*[I-Font]key\f[] where \f\*[I-Font]keyno\f[] is a positive integer (between 1 and 65534), \f\*[I-Font]type\f[] is the message digest algorithm, and \f\*[I-Font]key\f[] is the key itself. The \f\*[I-Font]key\f[] may be given in a format controlled by the \f\*[I-Font]type\f[] field. The \f\*[I-Font]type\f[] \f[C]MD5\f[] is always supported. If \f[C]ntpd\f[] was built with the OpenSSL library then any digest library supported by that library may be specified. However, if compliance with FIPS 140-2 is required the \f\*[I-Font]type\f[] must be either \f[C]SHA\f[] or \f[C]SHA1\f[]. What follows are some key types, and corresponding formats:

7 .NOP \f[C]MD5\f[] The key is 1 to 16 printable characters terminated by an EOL, whitespace, or a \f[C]#\f[] (which is the "start of comment" character).

.ns

7 .NOP \f[C]SHA\f[]

.ns

7 .NOP \f[C]SHA1\f[]

.ns

7 .NOP \f[C]RMD160\f[] The key is a hex-encoded ASCII string of 40 characters, which is truncated as necessary.

Note that the keys used by the ntpq(8)\f[] and ntpdc(8)\f[] programs are checked against passwords requested by the programs and entered by hand, so it is generally appropriate to specify these keys in ASCII format. cvt_prog='/usr/local/gnu/share/autogen/texi2man' cvt_prog=`cd \`dirname "$cvt_prog"\` >/dev/null && pwd `/`basename "$cvt_prog"` cd $tmp_dir test -x "$cvt_prog" || die "'$cvt_prog' is not executable" { list='synopsis description options option-presets' for f in $list ; do cat $f ; echo ; done rm -f $list name list='implementation-notes environment files examples exit-status errors compatibility see-also conforming-to history authors copyright bugs notes' for f in $list ; do cat $f ; echo ; done > .end-doc rm -f $list list=`ls -1 *`' .end-doc' for f in $list ; do cat $f ; echo ; done rm -f $list } 1>.doc 2>/dev/null sed -f .cmds .doc | /usr/local/gnu/bin/grep -E -v '^[ ]*$' | $cvt_prog

14 .NOP /etc/ntp.keys\f[] the default name of the configuration file

ntp.conf(5)\f[], ntpd(@NTPD_MS@)\f[], ntpdate(@NTPDATE_MS@)\f[], ntpdc(@NTPDC_MS@)\f[], sntp(@SNTP_MS@)\f[] The University of Delaware Copyright (C) 1970-2013 The University of Delaware all rights reserved. This program is released under the terms of the NTP license, <http://ntp.org/license>. Please send bug reports to: http://bugs.ntp.org, bugs@ntp.org This document corresponds to version 4.2.7p404 of NTP. This document was derived from FreeBSD. This manual page was AutoGen-erated from the ntp.keys option definitions.