Active and Interactive Methods Used in Teaching and Learning the Topic "Cryptosystems Based on Nonlinear Feedback Shift Registers"

The paper presents active and interactive methods used for faster understanding and longer learning of the implementation of cryptosystems based on nonlinear feedback shift registers (NLFSRs) simulating the processes of encryption and decryption of English texts. Students investigate the theoretical issues, then using a safe environment they can test different tasks and, in the end, they can test their solution with a laboratory board developed in our University. The applications might be used in the educational process in various courses in the University of Ruse, allowing easy assimilation of the material studied by the students.