Thomas Peyrin (Nanyang Technological University, Singapore) =========================================================== Title: Tweakable Block Cipher Based Lightweight Cryptography Abstract: Lightweight cryptography aims at providing secure algorithms with acceptable performance (area, energy consumption, etc.) for very constrained devices such as RFID tags, embedded systems, etc. In this talk, we will focus on the recent trend of tweakable block-ciphers (TBC) in symmetric-key cryptography. After a short introduction on the design of lightweight cryptographic primitives, we will describe how a TBC seems to be a very interesting primitive in this scenario. We will in particular present ROMULUS and REMUS, two new TBC-based beyond-birthday Authenticated Encryption modes that provide excellent performances when instantiated with a lightweight TBC such as Skinny.