@misc{cryptoeprint:2013:238,
    author = {Markulf Kohlweiss and Ueli Maurer and Cristina Onete and Björn Tackmann and Daniele Venturi},
    title = {Anonymity-preserving Public-Key Encryption: A Constructive Approach},
    howpublished = {Cryptology ePrint Archive, Report 2013/238},
    year = {2013},
    url = {http://eprint.iacr.org/2013/238},
}