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mat2 is a metadata removal tool, supporting a wide range of commonly used file formats, written in python3: at its core, it's a library, used by an eponymous command-line interface, and a nautilus extension.

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jvoisin 09e748fa4c Refactor how offices files are handled - xml files are no longer considered harmless - Factorization of the `remove_all` method for office files - Explicit whitelist are used - Blacklist are used to skip files completely - Non-blacklisted files are _still cleaned_ - Unsupported files are still triggering an error		2018-06-21 23:02:41 +02:00
data	Add an svg version of the logo	2018-05-15 21:48:38 +02:00
doc	Improve the threat-model again, thanks to @joe	2018-06-20 00:10:21 +02:00
libmat2	Refactor how offices files are handled	2018-06-21 23:02:41 +02:00
nautilus	Add a prototype for the nautilus extension	2018-04-15 13:59:44 +02:00
tests	Improve a bit the coverage	2018-06-10 20:20:45 +02:00
.gitignore	Improve a bit the gitignore file	2018-05-21 22:50:36 +02:00
.gitlab-ci.yml	Add fedora in the CI	2018-06-19 00:01:28 +02:00
CHANGELOG.md	Bump the changelog	2018-05-16 23:11:18 +02:00
CONTRIBUTING.md	Document the fact that tests for MR are appreciated	2018-06-07 00:11:50 +02:00
LICENSE	Add LICENSE	2018-03-31 07:00:14 -07:00
mat2	Improve a bit how we're handling "problematic" files in the CLI	2018-06-10 00:07:49 +02:00
README.md	README: software is always singular	2018-06-18 23:49:54 +02:00
setup.py	Fix a typo in setup.py, thanks to Jonas Meurer	2018-05-23 01:29:49 +02:00

README.md

 _____ _____ _____ ___
|     |  _  |_   _|_  |  Keep you data,
| | | |     | | | |  _|     trash your meta!
|_|_|_|__|__| |_| |___|

This software is currently in beta, please don't use it for anything critical.

Metadata and privacy

Metadata consist of information that characterizes data. Metadata are used to provide documentation for data products. In essence, metadata answer who, what, when, where, why, and how about every facet of the data that are being documented.

Metadata within a file can tell a lot about you. Cameras record data about when a picture was taken and what camera was used. Office documents like PDF or Office automatically adds author and company information to documents and spreadsheets. Maybe you don't want to disclose those information on the web.

This is precisely the job of MAT2: getting rid, as much as possible, of metadata.

Requirements

python3-mutagen for audio support
python3-gi-cairo and gir1.2-poppler-0.18 for PDF support
gir1.2-gdkpixbuf-2.0 for images support
libimage-exiftool-perl for everything else

Please note that MAT2 requires at least Python3.5, meaning that it doesn't run on Debian Jessie,

Running the test suite

$ python3 -m unittest discover -v

Supported formats

$ python3 ./mat2 -l

The first iteration of MAT
Exiftool
pdf-redact-tools, that tries to deal with printer dots too.
pdfparanoia, that removes watermarks from PDF.

Contact

If possible, use the issues system. If you think that a more private contact is needed (eg. for reporting security issues), you can email Julien (jvoisin) Voisin at julien.voisin+mat@dustri.org, using the gpg key 9FCDEE9E1A381F311EA62A7404D041E8171901CC.

License

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Thanks

MAT2 wouldn't exist without:

the Google Summer of Code;
the fine people from Tails;
friends

Many thanks to them!