This software provides several tools implementing a scheme for "ciphertext-policy attribute based encryption" (CP-ABE). To install this software, you will need to have the Pairing-Based Cryptography (PBC) library installed. You can get it from the following page: http://crypto.stanford.edu/pbc/ For more information on CP-ABE and a tutorial on using the tools, see the project homepage: http://acsc.csl.sri.com/cpabe/ make LDFLAGS=" -lpbc -lcrypto -L/usr/lib/x86_64-linux-gnu -lglib-2.0 -lbswabe -lgmp"