Cryptology ePrint Archive: BibTeX Citation of Report 2015/514

@misc{cryptoeprint:2015:514,
    author = {Nir Bitansky and Shafi Goldwasser and Abhishek Jain and Omer Paneth and Vinod Vaikuntanathan and Brent Waters},
    title = {Time-Lock Puzzles from Randomized Encodings},
    howpublished = {Cryptology ePrint Archive, Report 2015/514},
    year = {2015},
    note = {\url{http://eprint.iacr.org/}},
}

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