The paper describes the creation of the system modeling of information leakage from digital devices. For this purpose side-channel analysis (SCA) attacks, which are based on gained information from the side channels (SCI) are being analyzed. Models for cryptographic attcks are based on information leakage from the side channels. Principles and methods for prevention the SСA attacks are described. The structure of system modelling of information leakage from digital devices is provided, the choice of its basic elements is made, and the main characteristics of microprocessors components are developed and created. Key words: side-channel analysis, attacks, digital device, microprocessor, information leakage.
