Industrial Automatic Control Systems and Controllers Annotation << Back Data Integrity Ensuring Model I.S. Kozhevnikova, A.V. Nikishova, E.V. Ananin, S.A. Makedonskiy File system objects were considered and those fi les for which is necessary to ensure integrity were allocated. All data stored in the PC fi le system were divided into groups, and each group was evaluated by the criterion of importance. Analyzed and ranked threats to data integrity. Data integrity ensuring program model based on an analysis of existing hash calculation algorithms has been developed. The developed model leads to improving the effi ciency of integrity. Estimated the effectiveness before and after the integration of the developed model. Experimental research and calculations have shown the increase in efficiency in ensuring the integrity when using the model. Keywords: data integrity; integrity object; hash function; integrity threat; RIPEMD-320. Contacts: E-mail: matuny77@gmail.com, E-mail: arinanv@mail.ru, E-mail: zananin@ya.ru, E-mail: infsec@volsu.ru Pp. 34-43.