chiark / gitweb /
more progress. recovery seems to be working now.
[distorted-keys] / recover
CommitLineData
599c8f75
MW
1#! /bin/sh
2###
3### Recover a secret stashed earlier
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
31RECOV LABEL
32Recover the secret LABEL using recovery key RECOV.
33
34The recovery key must be revealed. The secret is written to stdout.
35HELP
36dohelp
37
38## Parse the command line.
39case $# in 2) ;; *) echo >&2 "$usage"; exit 1 ;; esac
40recov=$1 label=$2
41checklabel "recovery key label" "$recov"
42checklabel "secret" "$label"
43
44## Do the recovery.
45blob=$KEYS/recov/$recov/current/$label.recov
46if [ ! -f $blob ]; then
47 echo >&2 "$quis: no recovery blob for secret \`$label'"
48 exit 1
49fi
50mem=$(userv root claim-mem-dir </dev/null)
51reveal=$mem/keys.reveal/$recov.current/secret
52if [ ! -f $reveal ]; then
53 echo >&2 "$quis: current $recov key not revealed"
54 exit 1
55fi
56tmp=$(mktmp); cleanup rmtmp
57ec_decrypt $reveal -i$blob
58
59###----- That's all, folks --------------------------------------------------