@misc{cryptoeprint:2013:152,
    author = {Christian Cachin and Kristiyan Haralambiev and Hsu-Chun Hsiao and Alessandro Sorniotti},
    title = {Policy-based Secure Deletion},
    howpublished = {Cryptology ePrint Archive, Report 2013/152},
    year = {2013},
    url = {http://eprint.iacr.org/2013/152},
}