Cryptology ePrint Archive: BibTeX Citation of Report 2015/236

@misc{cryptoeprint:2015:236,
    author = {Subhamoy Maitra and Santanu Sarkar and Anubhab Baksi and Pramit Dey},
    title = {Key Recovery from State Information of Sprout: Application to Cryptanalysis and Fault Attack},
    howpublished = {Cryptology ePrint Archive, Report 2015/236},
    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.