Abstract-Cryptographic systems, developed on the basis of nonpositional polynomial notations, are called nonconventional or modular. In this paper modelling of the encryption algorithm based on nonpositional polynomial notations is described. The development of the model of block cipher system comprises the construction of the modified nonpositional block cipher algorithm, using an analog of the Feistel scheme and a mode of application for this modified algorithm.
The software implementation results of the development for the system of cryptographic protection of information (SCPI) with the given characteristics are presented in the paper. This system is intended for using in systems and networks of information transmission and storage. In the created system of cryptographic protection of information, the nonconventional algorithms of encryption and digital signature formation developed on the basis of nonpositional polynominal notations (NPNs) are implemented. Synonyms of NPNs are notations in residual classes. Given characteristics are the length of the message or the digital signature, as well as cryptostrength of algorithms.
Building a secure local and remote data warehouse requires data transfer over network channels, identification and authentication of objects and subjects of information protection. Development of reliable and efficient cryptographic tools for information protection and security is needed. The goal is achieved through the development of encryption algorithms, formation and exchange of secret keys on the basis of the residual class system. In the article an unconventional algorithm of enciphering an electronic message of a given length consisting of two stages has been proposed. Streszczenie. Budowanie bezpiecznej lokalnej i zdalnej hurtowni danych rymaga przesyłu danych przez kanały sieciowe, identyfikacji i uwierzytelniania obiektów i podmiotów ochrony informacji. Potrzebne jest opracowanie niezawodnych i wydajnych narzędzi kryptograficznych do ochrony i bezpieczeństwa informacji. Cel ten jest osiągany poprzez rozwój algorytmów szyfrowania, tworzenie i wymianę tajnych kluczy na podstawie systemu klas resztkowych. W artykule zaproponowano niekonwencjonalny algorytm szyfrowania wiadomości elektronicznej o zadanej długości, składający się z dwóch etapów. (Tworzenie algorytmu szyfrowania na bazie liczb pierwszych w pozycyjnych układach obliczania klas resztowych).
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