@misc{cryptoeprint:2009:142,
    author = {Ronald Cramer and Dennis Hofheinz and Eike Kiltz},
    title = {Chosen-ciphertext Secure Encryption from Hard Algebraic Set Systems},
    howpublished = {Cryptology ePrint Archive, Report 2009/142},
    year = {2009},
    url = {http://eprint.iacr.org/2009/142},
}