The study of symmetric encryption algorithms asymmetric information and encryption information. On the basis of the study the selected encryption algorithm information for the optimization problem of the system of objective control of the process. A study of the use of hashing in the program of optimization of a control system of the technological process and the choice of the optimal method for a given problem. To ensure messages to for a given task is selected using MD5 hashing.
encryption, encryption algorithm, cryptographic system, hashing