@mastersthesis{EURECOM+1677,
  author = {Bagga, Walid and Molva, Refik},
  title = {Provably secure policy-based cryptography},
  year = {2005},
  note = {© EURECOM. Personal use of this material is permitted. The definitive version of this paper was published in Research report RR-05-141 and is available at :},
}