Sycon: a new milestone in designing ASCON-like permutations

ASCON is one of the elegant designs authenticated encryption with associated data (AEAD) that was selected as first choice for lightweight applications in CAESAR competition, which also has been submitted to NIST cryptography standardization. literature a while; however, there no successful AEAD secure and at same time lighter than ASCON. In this article, we have overcome challenge constructing permutation while ensuring similar performance, based on achieve more call Sycon. Extensive security analysis Sycon confirms it provides level Our hardware implementation result shows 5.35% reduced area, compared permutation. This leads remarkable area reduction about 14.95% AEAD. We regard new milestone lightest among all AEADs belonging family.