@InProceedings{BBG05,
  author =       {Dan Boneh and Xavier Boyen and Eu-Jin Goh},
  title =        {Hierarchical Identity Based Encryption with Constant Size Ciphertext},
  booktitle =    {Proceedings of Eurocrypt 2005},
  pages =        {},
  year =         2005,
  editor =       {Ronald Cramer},
  series =       {LNCS},
  publisher =    {Springer}
}