To address these concerns, researchers at TII, in collaboration with researchers from ISAE-SUPAERO, Université de Toulouse (Toulouse, France) and Université de Limoges (Limoges Cedex, France), found a way to harden ROLLO-I-128 against time-based side-channel attacks.
In general, side-channel attacks look for weaknesses in how cryptographic algorithms are implemented to allow an attacker to analyze or break cryptographic systems. One type of side-channel attack looks for minor variations in the amount of time to run calculations. The new ROLLO-I-128 implementation ensures that calculations run in constant time, protecting the algorithm from timing-based attacks.
