Jean-Jacques Quisquater is an engineer in applied mathematics (Louvain) and holds a PhD in computer science (LRI, Orsay, France).
He is a emeritus professor of cryptography at UCLouvain (Louvain-la-Neuve) where he was settingthe UCL Crypto Group. From 1970 to 1991 he was a scientist at Philips Research, Brussels, where he was the main designer of the first secure smart cards by cryptography, ideas still in use today in your pocket (really). He there invented a well-known cryptographic scheme, the so-called Guillou-Quisquater protocol. He holds 20 patents. From 2004 he is an associated scientist at MIT-CSAIL. He was the director of the Begian project TIMESEC around 1996, the first implementation of a blockchain on the web and one model for bitcoin (the second reference, out of 8, in the famous paper about bitcoin, is mine).