09/05/2019, 17:00 — 18:00 — Abreu Faro Amphitheatre
Paulo Mateus, Instituto Superior Técnico, SQIG -IT, Universidade de Lisboa
Cryptography after Quantum Computation
Due to Shor's algorithm and the imminence of quantum computers, all cryptographic standards are being rethought. In this talk, we address a security functionality associated with privacy, namely oblivious transfer. We present some cryptographic solutions proposed within the Security and Quantum Information Group at Instituto de Telecomunicações. Specifically, we discuss the proof of security for methods based on quantum information (quantum cryptography) and for classical methods, based on hardness assumptions conjectured to be robust to quantum attacks (post-quantum cryptography). We conclude by examining the advantages and disadvantages of each approach, as well as their implications in cryptography and technology.