PriCloud is a research project to create a privacy preserving file storage using a blockchain.

More information can be found here:

• https://www.uni-ulm.de/in/vs/res/proj/pricloud/
• https://ieeexplore.ieee.org/abstract/document/7966965

The prototype is not a complete implementation and lacks support for required features.

It has been used to evaluate constructs published in several papers.

We need pbc (0.5.14) which in turn requires the gmp library. Unfortunately this needs to be installed manually. The koppercoin package can be installed with python setup.py install. Additional packages needed for the evaluation script can be installed with pip3 install -e ".[testing]" --verbose

LibPBC by default installs itself into /usr/local/lib. This can lead to problems on systems where this is not in the search path of the dynamic linker. In this case please add export LD_LIBRARY_PATH=/usr/local/lib to your ~/.bashrc.

You can run the tests with nosetests --with-doctest --verbose or alternatively python3 -m "nose" --with-doctest --verbose.

• Python 3
• pycrypto
• sphinx (only necessary if you want to generate the docs)
• pbc (0.5.14) which in turn requires the gmp library