Is it written correctly?

Before creating the program it is important to find the existed solutions and take a look at the main functionality, the graphical user interface and also algorithms that were used. Delayed for the analysis reasons it is essential to define the pros and cons of presented breaking programs.

Research showed that there exist a very few program that allows breaking the Hill, Bifid and Playfair ciphers but it is should be noted, many of them consist errors, warnings and old libraries which affect on the total performance of the code. In fact, there is no program on the internet that has user-friendly interface and described functionality which is the main criteria for modern software.

In order to understand how programs are working, we have to take apart the Bifid cipher, consider the specificity of the Polybius square as well as to review available methods of cracking.

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