Mutations of Cryptographic Algorithms

Data security aims to achieve confidentiality, integrity, and availability of data. To reach confidentiality, different encryption algorithms are needed. The most used today are RSA, AES, and Diffie-Helman. Although these algorithms are considered secure today, as the performance of computers increases, their security is radically reduced. Concerning the increasing performance of modern computers and the effort to use encryption algorithms in devices with limited memory, new encryption algorithms are being developed. Although post-quantum encryption algorithms are considered the most promising direction in this area, some scientists are also dealing with mutations of encryption algorithms. In this article, we deal with the design of two simple encryption algorithms - Vigener's cipher and matrix encryption. Next, we test these algorithms from the point of view of time requirements.