Cryptology ePrint Archive: BibTeX Citation of Report 2015/923

@misc{cryptoeprint:2015:923,
    author = {Sikhar Patranabis and Yash Shrivastava and Debdeep Mukhopadhyay},
    title = {DYNAMIC KEY-AGGREGATE CRYPTOSYSTEM ON ELLIPTIC CURVES FOR ONLINE DATA SHARING},
    howpublished = {Cryptology ePrint Archive, Report 2015/923},
    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.