@misc{cryptoeprint:2015:347,
author = {Riham AlTawy and
Onur Duman and
Amr M. Youssef},
title = {Fault Analysis of Kuznyechik},
howpublished = {Cryptology ePrint Archive, Report 2015/347},
year = {2015},
note = {\url{https://ia.cr/2015/347}},
}
You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.