Difference between revisions of "Tomb"
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Revision as of 18:35, 23 April 2012
From the official website:
- Tomb is 100% free and open source software to make strong encryption easy to use.
- A tomb is like a locked folder that can be safely transported and hidden in a filesystem.
- Keys can be kept separate: for instance the tomb on your computer and the key on a USB stick.
Tomb aims to be a really simple to use software to manage "encrypted directories", called tombs. A tomb can only be opened if you both have a keyfile and you know the password. It also has advanced features, like steganography.
You can install Arch User Repository.AUR from the
tomb is not present in the official repositories, but has his own repository:
[crypto] SigLevel = Required Server=http://tomb.dyne.org/arch_repo/$arch
add these two lines to your /etc/pacman.con, then
pacman -Syy pacman -S crypto/tomb
Otherwise, you can install Arch User Repository.AUR, available in the
If you want to check out the development version, you can install
tomb-git from the "crypto" repo (the same as above),
or AUR from the Arch User Repository.
Tomb is meant to be used from the console as a single, non-interactive script.
it also provides
tomb-open, which is a simple interactive script to help you
create a tomb, open it, retrieve keys from USB.
Its typical usage is something like
tomb create /path/to/mysecret.tomb -s 200 tomb open /path/to/mysecret.tomb
This will create a 200MegaBytes tombfile, placing the key just next to the tomb (which is bad for security).
Calling it with a single argument will try to open a tomb.
tomb-open is way easier to use. Calling it without arguments will launch a wizard for tomb creation; it will provide a simple way to put the keyfile on a usb key, to provide effective two-factor.
tomb-open /path/to/mysecret.tomb. Even in this case,
support for retrieving the key from USB is automagical.
Syntax: tomb [options] command [file] [place] Commands: create create a new tomb FILE and its keys open open an existing tomb FILE on PLACE list list all open tombs or the one called FILE close close the open tomb called FILE (or all) slam close tomb FILE and kill all pids using it passwd change the password of a tomb key FILE Options: -s size of the tomb file when creating one (in MB) -k path to the key to use for opening a tomb -n don't process the hooks found in tomb -o mount options used to open (default: rw,noatime,nodev) -h print this help -v version information for this tool -q run quietly without printing informations -D print debugging information at runtime
- steganography (to hide the key inside a jpeg/wav file)
- bind hooks: can mount some of its subdirectories as "bind" to some other. Suppose, for example, you'd like to encrypt your .Mail, .firefox and Documents directories. Then you can create a tomb which contains these subdirectories (and others too, if you want) and create a simple configuration file inside the tomb itself; when you run
tomb openit will automatically bind that directories into the right places. This way you'll easily get an encrypted firefox profile, or maildir.
- post hooks: commands that are run when the tomb is open, or closed. You can imagine lot of things for this: open files inside the tomb, put your computer in a "paranoid" status (for example, disabling swap), whatever.