Cryptology ePrint Archive: BibTeX Citation of Report 2019/1356

@misc{cryptoeprint:2019:1356,
    author       = {Jacqueline Brendel and
		    Marc Fischlin and
		    Felix Günther and
		    Christian Janson and
		    Douglas Stebila},
    title        = {Towards Post-Quantum Security for Signal's X3DH Handshake},
    howpublished = {Cryptology ePrint Archive, Report 2019/1356},
    year         = {2019},
    note         = {\url{https://ia.cr/2019/1356}},
}

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