Package: devscripts
Version: 2.10.35
Severity: wishlist
File: /usr/bin/debsign

debsign should support using an alternative location for the secret
keyring to be used to sign particular uploads so that users can put
their secret keys onto encrypted media or smartcards instead of storing
the secret key on a vulnerable laptop.

http://www.linux.codehelp.co.uk/serendipity/index.php?/archives/131-Adapting-autofs-for-GPG-keys-to-an-SD-card.html

http://www.einval.com/~steve/docs/gpg-autofs.html

I have two keys, one is intended to remain on the laptop and has
comments to that effect (0xA897FD02). The other key, (0x28BCB3E3), is my
Debian upload key so needs to be protected a little more than the
ordinary laptop key (which I'll use when signing email on the laptop).
'debsign' does not have a way to specify a different --homedir or secret
keyring or any other option that would allow me to have an alternative
gpg configuration (maybe it should?). So I've copied debsign into my
home scripts directory to create a slightly modified version and then I
followed Steve's advice for ~/.gnupg/ to create a duplicate directory
with the same permissions and a much reduced public keyring file (just
exported my own keys). The secring.gpg file for this alternative homedir
is the on the SD card with the autofs symlink (so the only file on the
encrypted SDCard is the secret keyring).
Then it is a simple case of manually calling debsign (e.g. after using
debuild -uc -us):
~/scripts/debsign -k0x28bcb3e3 /path/to/.changes



+CARD=" --no-default-keyring --homedir=/home/neil/.gcard "

...

-                   $signcommand --local-user "$2" --clearsign \

+                   $signcommand $CARD --local-user "$2" --clearsign \

...

-                   $signcommand --local-user "$2" --clearsign \

+                   $signcommand $CARD --local-user "$2" --clearsign \

...

-       $signcommand -u "$2" +clearsig=on -fast < "$1" >
        "$ASCII_SIGNED_FILE"

+       $signcommand $CARD -u "$2" +clearsig=on -fast < "$1" >
"$ASCII_SIGNED_FILE"

It would be useful if the effect of this change could be made available
in debsign so that I could use it with this multiple key situation.

Something like:
$ debsign --homedir 
maybe?

--homedir - Specify an alternative home directory to be passed to gnupg
(in combination with the --no-default-keyring option) to allow debsign
to use an alternative key stored on removable (usually encrypted) media.
See http://www.einval.com/~steve/docs/gpg-autofs.html

Just an idea.


-- Package-specific info:

--- /etc/devscripts.conf ---

--- ~/.devscripts ---
DEBSIGN_KEYID="0x28BCB3E3"
DEBRELEASE_UPLOADER="dput"

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages devscripts depends on:
ii  dpkg-dev                      1.14.22    Debian package development tools
ii  libc6                         2.7-13     GNU C Library: Shared libraries
ii  perl                          5.10.0-13  Larry Wall's Practical Extraction 

Versions of packages devscripts recommends:
ii  at                 3.1.10.1              Delayed job execution and batch pr
ii  bsd-mailx [mailx]  8.1.2-0.20071201cvs-3 A simple mail user agent
ii  curl               7.18.2-7              Get a file from an HTTP, HTTPS or 
ii  cvs                1:1.12.13-12          Concurrent Versions System
ii  dctrl-tools        2.13.0                Command-line tools to process Debi
ii  debian-keyring     2008.07.22            GnuPG (and obsolete PGP) keys of D
ii  debian-maintainers 1.44                  GPG keys of Debian maintainers
ii  dput               0.9.2.33              Debian package upload tool
ii  dupload            2.6.4                 utility to upload Debian packages
ii  elinks [www-browse 0.11.4-2              advanced text-mode WWW browser
ii  epiphany-gecko [ww 2.22.3-3              Intuitive GNOME web browser - Geck
ii  epiphany-webkit [w 2.22.3-3              Intuitive GNOME web browser - webk
pn  equivs             <none>                (no description available)
ii  fakeroot           1.9.6                 Gives a fake root environment
ii  galeon [www-browse 2.0.6-2               GNOME web browser for advanced use
ii  git-core           1:1.5.6.5-1           fast, scalable, distributed revisi
ii  gnupg              1.4.9-3               GNU privacy guard - a free PGP rep
ii  iceweasel [www-bro 3.0.1-1               lightweight web browser based on M
pn  libauthen-sasl-per <none>                (no description available)
ii  libcrypt-ssleay-pe 0.57-1+b1             Support for https protocol in LWP
ii  libparse-debcontro 2.005-2               Easy OO parsing of Debian control-
ii  libsoap-lite-perl  0.710.08-1            Client and server side SOAP implem
pn  libterm-size-perl  <none>                (no description available)
ii  libtimedate-perl   1.1600-9              Time and date functions for Perl
ii  liburi-perl        1.35.dfsg.1-1         Manipulates and accesses URI strin
ii  libwww-perl        5.813-1               WWW client/server library for Perl
pn  libyaml-syck-perl  <none>                (no description available)
ii  lintian            1.24.4                Debian package checker
ii  lsb-release        3.2-20                Linux Standard Base version report
ii  lynx-cur [www-brow 2.8.7dev9-2           Text-mode WWW Browser with NLS sup
ii  mailx              1:20071201-3          Transitional package for mailx ren
ii  man-db             2.5.2-2               on-line manual pager
ii  openssh-client [ss 1:5.1p1-2             secure shell client, an rlogin/rsh
ii  patch              2.5.9-5               Apply a diff file to an original
ii  patchutils         0.2.31-4              Utilities to work with patches
ii  strace             4.5.17+cvs080723-2    A system call tracer
ii  subversion         1.5.1dfsg1-1          Advanced version control system
ii  unzip              5.52-12               De-archiver for .zip files
ii  w3m [www-browser]  0.5.2-2+b1            WWW browsable pager with excellent
ii  wdiff              0.5-18                Compares two files word by word
ii  wget               1.11.4-2              retrieves files from the web

Versions of packages devscripts suggests:
ii  build-essential               11.4       Informational list of build-essent
ii  cvs-buildpackage              5.22       A set of Debian package scripts fo
pn  devscripts-el                 <none>     (no description available)
pn  gnuplot                       <none>     (no description available)
pn  libfile-desktopentry-perl     <none>     (no description available)
pn  libnet-smtp-ssl-perl          <none>     (no description available)
ii  mutt                          1.5.18-4   text-based mailreader supporting M
ii  svn-buildpackage              0.6.23     helper programs to maintain Debian

-- no debconf information




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