@misc{cryptoeprint:2007:243,
    author = {Ari Juels and Burton S. Kaliski Jr.},
    title = {PORs: Proofs of Retrievability for Large Files},
    howpublished = {Cryptology ePrint Archive, Report 2007/243},
    year = {2007},
    url = {http://eprint.iacr.org/2007/243},
}