PRACTICAL IMPLEMENTATION OF INFORMATION PROTECTION RESULTS BASED ON CET ENCRYPTION TECHNOLOGY

The article evaluates the statistical properties of the results of CET-encryption of information-driven permutation operations. The possibility of using CET-operations in stream encryption in sequential transformation of open information elements is investigated. Based on the generalization of the obtained results, a method of cryptographic transformation based on information-driven CET-operations is developed. The structure of an information protection system based on cryptographic transformation based on information-driven CET-operations is proposed and functional models of devices for their hardware implementation are developed. Based on the implemented software implementation of the information protection method, the generated pseudorandom sequences are tested using the NIST STS test software package. Analysis of the test results made it possible to conclude that the proposed method of cryptographic transformation based on information-driven CET-operations is suitable for use in information resource protection systems. Pseudorandom sequence generators are the most important elements of any protection system, the reliability of which is largely determined by the properties of the generators used. Qualitative pseudorandom sequences, which are inherently deterministic, have almost all the properties of implementations of truly random processes and successfully replace them, since random sequences are extremely difficult to form. Discrete-casual models of elementary functions of information-driven permutations were constructed. The properties of these models were established, which allowed to simplify the method of their synthesis. Only two-operand CET-operations of the basic group of operations, which were obtained according to the results of the experiment, were used. This limitation is due to the possibility of constructing a complete group of models of one-operand CET-operations of information-driven permutations from models of one-operand CET-operations of the basic group.