Cryptology ePrint Archive: BibTeX Citation of Report 2015/508

@misc{cryptoeprint:2015:508,
    author = {Santanu Sarkar and Prakash Dey and  Avishek Adhikari and Subhamoy Maitra},
    title = {Probabilistic Signature Based Framework for Differential Fault Analysis of Stream Ciphers},
    howpublished = {Cryptology ePrint Archive, Report 2015/508},
    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.