shamir.1: Add manpage.
[distorted-keys] / cryptop.genkey
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1#! /bin/sh
2###
3### Generate a user key
4###
5### (c) 2011 Mark Wooding
6###
7
8###----- Licensing notice ---------------------------------------------------
9###
10### This file is part of the distorted.org.uk key management suite.
11###
12### distorted-keys is free software; you can redistribute it and/or modify
13### it under the terms of the GNU General Public License as published by
14### the Free Software Foundation; either version 2 of the License, or
15### (at your option) any later version.
16###
17### distorted-keys is distributed in the hope that it will be useful,
18### but WITHOUT ANY WARRANTY; without even the implied warranty of
19### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20### GNU General Public License for more details.
21###
22### You should have received a copy of the GNU General Public License
23### along with distorted-keys; if not, write to the Free Software Foundation,
24### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25
26set -e
27case "${KEYSLIB+t}" in t) ;; *) echo >&2 "$0: KEYSLIB unset"; exit 1 ;; esac
28. "$KEYSLIB"/keyfunc.sh
29
30defhelp <<HELP
4b5f9bc0 31[-f] KEY PROFILE [OPTION=VALUE ...]
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32Generate a named KEY, according to the PROFILE.
33
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34The OPTIONS and VALUES are passed to the key-type handler selected by the
35profile.
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36
37Options:
38 -f Force overwriting an existing key.
39HELP
40
41genhook_recov () {
42 base=$1 nub=$2
1c739837 43 for recov in $kprop_recovery; do
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44 (stash $recov $kowner/$klabel <"$nub")
45 done
46}
47
48## Parse command-line arguments.
49forcep=nil
50while getopts "f" opt; do
51 case "$opt" in
52 f) forcep=t ;;
53 *) usage_err ;;
54 esac
55done
56shift $(( $OPTIND - 1 ))
57case $# in 0 | 1) usage_err ;; esac
58key=$1 profile=$2; shift 2
59
60## Check the key name carefully. This is where we actually create files,
61## so it's reallly important to make sure that we don't make any stupid
62## mistakes.
63mktmp
64parse_keylabel "$key"
65case "$kowner" in
66 "$USERV_USER") ;;
67 *) echo >&2 "$quis: invalid owner \`$kowner' for key"; exit 1 ;;
68esac
69case $forcep in
70 nil)
71 if [ -d $kdir ]; then
72 echo >&2 "$quis: key \`$key' already exists"
73 exit 1
74 fi
75 ;;
76esac
77
78## Check the profile name. We shouldn't allow users to refer to each
79## other's profiles.
80case "$profile" in
81 :*)
82 label=${profile#:}
83 ;;
84 *:*)
85 powner=${profile%%:*} label=${profile#*:}
86 case "$powner" in
87 "$USERV_USER") ;;
88 *) echo >&2 "$quis: invalid owner \`$powner' for profile"; exit 1 ;;
89 esac
90 ;;
91 *)
92 label=$profile
93 ;;
94esac
95checkword "profile label" "$label"
e9cf7079 96read_profile $USERV_USER $profile
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97
98## Generate the key.
99c_genkey $profile $kdir $knub genhook_recov "$@"
100
101###----- That's all, folks --------------------------------------------------