Cordiality and Magicness of the Cartesian Product of Digraphs

We take into account a few combinatorial issues brought on by the requirement to provide security on a communications network. One of the key factors in the design of a security system is key management. We go through key distribution patterns, a way to condense the number of keys stored in a big network, and secret sharing systems that can be used to safeguard keys from theft or unauthorized access. We outline some combinatorial patterns with cordiality, referred to as authentication schemes, that could be utilized to create encodings that can spot such changes.