The program complex of studying crypto algorithm Rijndael

The program complex of studying block crypto algorithm Rijndael is offered, the feature of which is round by round realization of algorithm with possibility of visualization of intermediate results. The interface of the program complex is represented in this paper. The C language is selected for the development of the application, as it works with data at a bit level very effectively, that is very important for writing algorithms of encoding. Proceed from the assignment of the program, it was given the special attention to the development of the interface. It was decided to realize the program complex on the language Microsoft Visual C++. The designed program complex researched the degree of correlation among bit images that were obtained on different rounds of encrypting. The calculated coefficients of correlation do not exceed 0,1.