Cryptology ePrint Archive: BibTeX Citation of Report 2013/683

    author = {Venkata Koppula and Kim Ramchen and Brent Waters},
    title = {Separations in Circular Security for Arbitrary Length Key Cycles},
    howpublished = {Cryptology ePrint Archive, Report 2013/683},
    year = {2013},
    note = {\url{}},

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.

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