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  • Committer: Teddy Hogeborn
  • Date: 2015-07-20 03:03:33 UTC
  • Revision ID: teddy@recompile.se-20150720030333-203m2aeblypcsfte
Bug fix for GnuTLS 3: be compatible with old 2048-bit DSA keys.

The mandos-keygen program in Mandos version 1.6.0 and older generated
2048-bit DSA keys, and when GnuTLS uses these it has trouble
connecting using the Mandos default priority string.  This was
previously fixed in Mandos 1.6.2, but the bug reappeared when using
GnuTLS 3, so the default priority string has to change again; this
time also the Mandos client has to change its default, so now the
server and the client should use the same default priority string:

SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA:+SIGN-DSA-SHA256

* mandos (main/server_defaults): Changed default priority string.
* mandos-options.xml (/section/para[id="priority_compat"]): Removed.
  (/section/para[id="priority"]): Changed default priority string.
* mandos.conf ([DEFAULT]/priority): - '' -
* mandos.conf.xml (OPTIONS/priority): Refer to the id "priority"
                                      instead of "priority_compat".
* mandos.xml (OPTIONS/--priority): - '' -
* plugins.d/mandos-client.c (main): Changed default priority string.

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Lines of Context:
INSTALL
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** Operating System
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   Debian 8.0 "jessie" or Ubuntu 15.10 "Wily Werewolf" (or later).
 
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   Debian 6.0 "squeeze" or Ubuntu 10.10 "Maverick Meerkat" (or later).
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   This is mostly for the support scripts which make sure that the
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   client is installed and started in the initial RAM disk environment
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    "man -l mandos.8".
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*** Mandos Server
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    + GnuTLS 3.3          https://www.gnutls.org/
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      (but not 3.6.0 or later, until 3.6.6, which works)
 
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    + GnuTLS 2.4          http://www.gnutls.org/
 
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      Note: GnuTLS 3 will only work with Python-GnuTLS 2
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    + Avahi 0.6.16        http://www.avahi.org/
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    + Python 2.7          https://www.python.org/
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    + dbus-python 0.82.4 https://dbus.freedesktop.org/doc/dbus-python/
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    + PyGObject 3.7.1     https://wiki.gnome.org/Projects/PyGObject
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    + pkg-config https://www.freedesktop.org/wiki/Software/pkg-config/
 
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    + Python-GnuTLS 1.1.5 https://pypi.python.org/pypi/python-gnutls/
 
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    + dbus-python 0.82.4  http://dbus.freedesktop.org/doc/dbus-python/
 
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    + PyGObject 2.14.2    https://developer.gnome.org/pygobject/
 
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    + pkg-config  http://www.freedesktop.org/wiki/Software/pkg-config/
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    + Urwid 1.0.1         http://urwid.org/
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      (Only needed by the "mandos-monitor" tool.)
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    + ssh-keyscan from OpenSSH http://www.openssh.com/
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    Package names:
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    avahi-daemon python python-dbus python-gi python-urwid pkg-config
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    fping ssh-client
 
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    python-gnutls avahi-daemon python python-avahi python-dbus
 
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    python-gobject python-urwid pkg-config fping ssh-client
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*** Mandos Client
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    + GNU C Library 2.16 https://gnu.org/software/libc/
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    + initramfs-tools 0.85i
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                        https://tracker.debian.org/pkg/initramfs-tools
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    + GnuTLS 3.3        https://www.gnutls.org/
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      (but not 3.6.0 or later, until 3.6.6 which works)
 
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    + GnuTLS 2.4        http://www.gnutls.org/
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    + Avahi 0.6.16      http://www.avahi.org/
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    + GnuPG 1.4.9       https://www.gnupg.org/
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    + GPGME 1.1.6       https://www.gnupg.org/related_software/gpgme/
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    + pkg-config https://www.freedesktop.org/wiki/Software/pkg-config/
 
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    + pkg-config  http://www.freedesktop.org/wiki/Software/pkg-config/
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    Strongly recommended:
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    + OpenSSH           http://www.openssh.com/
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    Package names:
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    initramfs-tools libgnutls-dev gnutls-bin libavahi-core-dev gnupg
 
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    initramfs-tools libgnutls-dev libavahi-core-dev gnupg
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    libgpgme11-dev pkg-config ssh
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* Installing the Mandos server
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        # /usr/lib/mandos/plugins.d/mandos-client \
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                --pubkey=/etc/keys/mandos/pubkey.txt \
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                --seckey=/etc/keys/mandos/seckey.txt \
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                --tls-privkey=/etc/keys/mandos/tls-privkey.pem \
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                --tls-pubkey=/etc/keys/mandos/tls-pubkey.pem; echo
 
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                --seckey=/etc/keys/mandos/seckey.txt; echo
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     This command should retrieve the password from the server,
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     decrypt it, and output it to standard output.