@misc{cryptoeprint:2012:150,
    author = {Dennis Hofheinz},
    title = {Circular chosen-ciphertext security with compact ciphertexts},
    howpublished = {Cryptology ePrint Archive, Report 2012/150},
    year = {2012},
    url = {http://eprint.iacr.org/2012/150},
}