@misc{cryptoeprint:2011:648,
    author = {Tatsuaki Okamoto and Katsuyuki Takashima},
    title = {Achieving Short Ciphertexts or Short Secret-Keys for Adaptively Secure General Inner-Product Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2011/648},
    year = {2011},
    url = {http://eprint.iacr.org/2011/648},
}