@misc{cryptoeprint:2011:564,
    author = {N. Ahmed and C.D. Jensen and E. Zenner},
    title = {Private-key Symbolic Encryption},
    howpublished = {Cryptology ePrint Archive, Report 2011/564},
    year = {2011},
    url = {http://eprint.iacr.org/2011/564},
}