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124 lines
5.4 KiB
Markdown
124 lines
5.4 KiB
Markdown
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..... ..
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.H8888888h. ~-. . uW8"
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888888888888x `> u. .. . : `t888
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X~ `?888888hx~ ...ue888b .888: x888 x888. 8888 .
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' x8.^"*88*" 888R Y888r ~`8888~'888X`?888f` 9888.z88N
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`-:- X8888x 888R I888> X888 888X '888> 9888 888E
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488888> 888R I888> X888 888X '888> 9888 888E
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.. `"88* 888R I888> X888 888X '888> 9888 888E
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x88888nX" . u8888cJ888 X888 888X '888> 9888 888E
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!"*8888888n.. : "*888*P" "*88%""*88" '888!` .8888 888"
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' "*88888888* 'Y" `~ " `"` `%888*%"
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^"***"` "`
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*A minimalistic commandline tool to manage encrypted volumes* aka **The Crypto Undertaker**
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Latest stable version: **1.5.3**
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Updates on website: http://dyne.org/software/tomb
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Get the stable .tar.gz signed release for production use!
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Download it from https://files.dyne.org/tomb
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# What is Tomb, the crypto undertaker
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Tomb aims to be a free and open source system for easy encryption and
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backup of personal files, written in code that is easy to review and
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links shared GNU/Linux components.
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At present time, Tomb consists of a simple shell script (Zsh) using
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standard filesystem tools (GNU) and the cryptographic API of the Linux
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kernel (cryptsetup and LUKS). Tomb can also produce machine parsable
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output to facilitate its use inside graphical applications.
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# How does it works
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For the instructions on how to get started using Tomb, see [INSTALL](INSTALL.md).
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This tool can be used to dig .tomb files (Luks volumes), forge keys
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protected by a password (GnuPG symmetric encryption) and use the keys
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to lock the tombs. Tombs are like single files whose contents are
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unaccessible in absence of the key they were locked with and its
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password.
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Once open the tombs are just like normal folders and can contain
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different files, plus they offer advanced functionalities like bind
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and execution hooks and fast search, or they can be slammed close even
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if busy. Keys can be stored on separate media like USB sticks, NFC or
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bluetooth devices to make the transport of data safer: one always
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needs both the tomb and the key, plus its password, to access it.
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The tomb script takes care of several details to improve the security
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of tombs in every day usage: adopting pinentry for passwords,
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facilitating the storage of backup keys using image steganography,
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listing open tombs and selectively closing them, warning the user
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about their size and last time they were used, etc.
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# How secure is this?
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Death is the only sure thing in life. Said that, Tomb is a pretty
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secure tool especially because it keeps minimal, its source is always
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open and its code is easy to review with a bit of shell script
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knowledge.
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All encryption tools being used in Tomb are included as default in
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many GNU/Linux operating systems and therefore are regularly peer
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reviewed: we don't add anything else to them really, just a layer of
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usability.
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The code of Tomb can be read in a literate programming style on
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http://tomb.dyne.org/literate
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# Stage of development
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Tomb is an evolution of the 'mknest' tool developed for the dyne:bolic
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GNU/Linux distribution, which is used by its 'nesting' mechanism to
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encrypt the Home directory of users, a system implemented already in
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2001. Since then, the same shell routines kept being maintained and in
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2007 they were adapted to work on various other GNU/Linux distributions.
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As of today, Tomb is a well stable tool also used in mission critical
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situations by a number of activists in endangered zones. It has been
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reviewed by forensics analysts and it can be considered to be safe for
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military grade use, where the integrity of informations stored depend
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from the user's behaviour and the strenght of a standard AES-256
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(XTS plain) encryption algorithm.
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# Use stable releases in production
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Anyone planning to use Tomb to store and access secrets should not use
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the latest development version in Git, but use instead the .tar.gz
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release on https://files.dyne.org/tomb . The stable version will
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always insure backward compatibility with older tombs: we make sure it
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creates sane tombs and keys by running various tests before releasing
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it. The development version in Git might introduce sudden bugs and is
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not granted to produce backward or forward compatible tombs and keys.
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Only developers and testers should use the Git version to report bugs,
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test new features and develop patches.
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So be warned: do not use the latest Git version in production
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environments, but use a stable release versioned and packed as
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tarball on https://files.dyne.org/tomb
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# How can you help
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Donations are always welcome, see https://www.dyne.org/donate
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Translations are also needed: they can be contributed via this website
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https://poeditor.com/join/project?hash=33bdefea2e46b26f512a0caae55fbbb5
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or simply sending the .po file. Start from `extras/po/tomb.pot`.
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Code is pretty short and readable: start looking around it and the
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materials found in doc/ which are good pointers at security measures
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to be further implemented.
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For the bleeding edge visit https://github.com/dyne/Tomb
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Tomb's developers can be contacted using the issues on GitHub or over
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IRC on https://irc.dyne.org channel **#dyne**
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Some enthusiastic ideas are in the [TODO](doc/TODO.org) file.
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Information on developers involved is found in the [AUTHORS](AUTHORS.md) file.
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