Matrix-Based Cryptography: The Characteristic Product Approach

Abstract

For many years, the need to store information or data has been a fundamental problem for
human society, driving the development of various systems to address this requirement. In this study, we
will focus on the encryption and decryption of soft sets, aligning with their specific forms of representation.
To achieve this, we will employ the Rijndael algorithm, applying it to the encryption and decryption of
these soft sets. The Rijndael algorithm operates through a cyclic process that utilizes a series of keys; with
each cycle, the key is updated and subsequently applied to the data. Initially, this data is formatted as
strings, where indexing begins at zero and continues up to one less than the total string length.