Cryptographic algorithms are designed to protect data or communication in the presence of an attacker. If these algorithms make use of a secret key, then their security relies on the secrecy of the key. Hence, the primary objective of an attack

Testing an S-Box for Cryptographic Use Generally, one faces two type of problems related to the selection of an s-box (substitution box/function) before its cryptographic use can be considered secure. First one is how to design (or search) a go