tmore user manual documentation - tomb - the crypto undertaker (HTM) git clone git://parazyd.org/tomb.git (DIR) Log (DIR) Files (DIR) Refs (DIR) README (DIR) LICENSE --- (DIR) commit b04282426310e724cd47b34672937b116ece33fd (DIR) parent 266319eee821eaee7f078c86695b66394c4163c8 (HTM) Author: Jaromil <jaromil@dyne.org> Date: Fri, 29 Mar 2013 12:47:44 +0100 more user manual documentation Diffstat: M doc/Tomb_User_Manual.org | 95 +++++++++++++++++++++++++++---- 1 file changed, 85 insertions(+), 10 deletions(-) --- (DIR) diff --git a/doc/Tomb_User_Manual.org b/doc/Tomb_User_Manual.org t@@ -14,6 +14,8 @@ #+LATEX_HEADER: \usepackage{lmodern} #+LATEX_HEADER: \usepackage[hang,small]{caption} #+LATEX_HEADER: \usepackage{float} +#+LATEX_HEADER: \usepackage{makeidx} +#+LATEX_HEADER: \makeindex *Abstract*: Tomb is a cryptographic application that helps you store private and confidential data into volumes secured by keys and t@@ -28,6 +30,7 @@ #+EXCLUDE_KEYWORD: noexport + [TABLE-OF-CONTENTS] #+LATEX: \newpage t@@ -64,8 +67,14 @@ resistance to omologation. (from [[http://www.newschool.edu/centers/socres/privacy/Home.html][Privacy Conference, Social Research, New School University]]) #+END_QUOTE + ** Who needs Tomb +Tomb improves the usability patterns of every-day cryptography and +relies on military-grade algorithms to grant a level of secrecy for +stored data that is very hard to break by most military organisations +and law enforcement agencies. + Our target community are GNU/Linux users with no time to click around, sometimes using old or borrowed computers, operating in places endangered by conflict where a leak of personal data can be a threat. t@@ -81,12 +90,13 @@ personal directories in place using /bind hooks/. ** Under the Hood -Tomb provides military-grade encryption on your fingertips, fostering -best practices and saving users the time to look into the details of -/LUKS/ volumes and /cryptsetup/. Rather than reinventing the wheel, -Tomb relies only on peer-reviewed, free and open source software -components: at its core is DM-Crypt[fn:dm-crypt] which is part of the -Linux kernel architecture. +Tomb provides military-grade encryption at the reach of your +fingertips, fostering best practices and saving users the time to look +into the details of /LUKS/ volumes and /cryptsetup/. Rather than +reinventing the wheel, Tomb relies only on peer-reviewed, free and +open source software components: at its core is DM-Crypt[fn:dm-crypt] +which is part of the Linux kernel architecture. + For better clarity, Tomb is written in shell script and its code can be reviewed any time. More specifically, Tomb is written in ZSh, but t@@ -106,7 +116,7 @@ storage. ** Yet another tool? -\indexentry{dyne:bolic} +\index{dyne:bolic} Tomb is an evolution of the /Nesting/ tool developed in 2001 for the [[http://www.dynebolic.org][Dyne:bolic GNU/Linux distribution]]: a /nomadic system/ to encrypt the t@@ -120,13 +130,13 @@ Later on we've felt the urgency to publishing this mechanism for other operating systems than dyne:bolic since the current situation in personal desktop encryption is far from optimal. Let's have a look. -\indexentry{truecrypt} +\index{truecrypt} [[http://en.wikipedia.org/wiki/TrueCrypt][TrueCrypt]] makes use of statically linked libraries so that its code is hard to audit, plus is [[http://lists.freedesktop.org/archives/distributions/2008-October/000276.html][not considered free]] by free operating system distributors because of liability reasons, see [[http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=364034][Debian]], [[https://bugs.edge.launchpad.net/ubuntu/+bug/109701][Ubuntu]], [[http://lists.opensuse.org/opensuse-buildservice/2008-10/msg00055.html][Suse]], [[http://bugs.gentoo.org/show_bug.cgi?id=241650][Gentoo]] and [[https://fedoraproject.org/wiki/ForbiddenItems#TrueCrypt][Fedora]]. -\indexentry{cryptkeeper} +\index{cryptkeeper} [[http://tom.noflag.org.uk/cryptkeeper.html][Cryptkeeper]] is the best alternative to Tomb out there and its main advantage consists in not needing root access on the machine it's being used. But Cryptkeeper still has drawbacks: it uses [[http://www.arg0.net/encfs][EncFS]] which t@@ -154,7 +164,70 @@ If you believe this is a worthy effort, you are welcome to [[http://dyne.org/don * TODO Getting Started -/work on contents in the crunchbang howto/ +** Build + +Tomb at its core consists of a single Z-Shell script which has to be run as root, plus a few common dependencies that must be present on the system: + + - *Zsh* http://www.zsh.org + - *Cryptsetup* + - *Sudo* + - *GnuPG* http://www.gnupg.org + - *Pinentry* + +Provided the programs above are installed and root access is available on the system, *the impatient user can just skip the rest of this section, download the bare Tomb script and use it*. The nitpickers out there are right to wonder about running a script as root, so please be welcome to [[http://tomb.dyne.org/codedoc][review Tomb's code]]. Those running on [[http://www.dynebolic.org][Dyne:bolic GNU/Linux]] can simply skip this step since our operating system already contains a fully featured version of Tomb. + +In addition to the core script there are a number of optional packages that, if present on the system, will be used by Tomb to enhance the user experience, add features and improve security. + +To start a full build make sure you know some command-line basics, then [[http://files.dyne.org/tomb/releases][download the full stable source distribution of Tomb]], unpack it and read on. + +: tar xvfz Tomb-1.3.tar.gz +: cd Tomb + +Be welcome to the making of your tomb. + +*** Security extras + +To make the steganography feature available, that is the possibility to hide keys inside images, one needs to install the *steghide* software on your system. + +To insure secure deletion of all Tomb traces temporary written in memory or on storage by Tomb, one should install *wipe*. + +To enable the anti-bruteforce feature, KDF libs should be installed and they often require a recent version of GLib-2[fn:debglib] + +[fn:debglib] On Debian 6.0 for instance the version of GLib-2 is too old and should be installed from source or from backports + +*** Usability extras + +To have a progress bar that informs about the status of tomb creation steps, one should install *dcfldd* which is an enhanced version of the simple /dd/ UNIX tool. + +If Tomb is used locally on a graphical desktop, one might prefer to use a graphical dialog to input the password, then install *pinentry-gtk* or *pinentry-qt*. + +To compile the *gtk-tray* component that shows the open tomb in your desktop tray, make sure the following packages are installed (this list matches package names for Debian/Ubuntu distributions: + +: build-essential autoconf libtool gtk2.0-dev libnotify-dev zsh pinentry-curses pinentry-gtk2 + +*** Binary builds + +Once all the extra dependencies are in place on your system, to build the gtk-tray or the KDF components, one should run the usual commands: + +: ./configure +: make + +This will autodetect the capabilities of the system and build binary helper applications needed for those two extra functions. Any other feature in Tomb does not require compiling anything. + +** Installation + +After running the configure-make combo to compile binaries it is possible to simply use *make install* to copy several files in place, including the main tomb script, image resources for the gtk pinentry and manuals. + +Assuming the prefix is /usr/local paths for installation are: + + - /usr/local/bin/tomb + - /usr/local/share/tomb + +When installed on a multi-user system, Tomb can be made available to all users even without granting them root access. Simply add this line to */etc/sudoers* (using the visudo command as root) for each user you like to enable to build and use tombs: + +: username ALL=NOPASSWD: /usr/local/bin/tomb + +Tomb is built with this possibility in mind and its code is reviewed to make this setup safe, so that a user cannot escalate to the privilege of a full root shell on the system, but just handle Tombs. * Tombs in your pockets t@@ -199,5 +272,7 @@ community]] and the mestizo community of southern Mexico, Chapas and Oaxaca. * Remote tombs +* Alphabetic Index +\printindex