A finer-grain analysis of the leakage (non) resilience of OCB

• Main Authors: Berti, Francesco, Bhasin, Shivam, Breier, Jakub, Hou, Xiaolu, Poussier, Romain, Standaert, François-Xavier, Udvarhelyi, Balasz
• Format: Article
• Language: English
• Published: 2023
• Subjects: Engineering::Computer science and engineering; OCB; Side-Channel Attacks
• Online Access: https://hdl.handle.net/10356/164223
• Institution: Nanyang Technological University

OCB3 is one of the winners of the CAESAR competition and is among the most popular authenticated encryption schemes. In this paper, we put forward a fine-grain study of its security against side-channel attacks. We start from trivial key recoveries in settings where the mode can be attacked with sta...