@misc{cryptoeprint:2009:089,
    author = {Boris Köpf and Markus Dürmuth},
    title = {A Provably Secure And Efficient Countermeasure Against Timing Attacks},
    howpublished = {Cryptology ePrint Archive, Report 2009/089},
    year = {2009},
    url = {http://eprint.iacr.org/2009/089},
}