Cryptology ePrint Archive: BibTeX Citation of Report 2015/1000

@misc{cryptoeprint:2015:1000,
    author = {Luke Valenta and Shaanan Cohney and Alex Liao and Joshua Fried and Satya Bodduluri and Nadia Heninger},
    title = {Factoring as a Service},
    howpublished = {Cryptology ePrint Archive, Report 2015/1000},
    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.