@misc{cryptoeprint:2004:261,
    author = {Dan Boneh and Jonathan Katz},
    title = {Improved Efficiency for CCA-Secure Cryptosystems Built Using Identity-Based Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2004/261},
    year = {2004},
    url = {http://eprint.iacr.org/2004/261},
}