Jurišić received a B.A. from the University of Ljubljana in 1987, and an M.Sc. and Ph.D. from the University of Waterloo in 1990 and 1995. Jurišić wrote a book of problems for mathematics competitions in 1989, and in 2005 he became a co-founder of the Slovenian Society of Cryptology. He is currently a teacher of cryptography and computer security at the Faculty of Computer and Information Science at the University of Ljubljana, and a researcher for the Institute of Mathematics, Physics and Mechanics (IMFM), in Ljubljana, Slovenia.