Modeling of Cryptosystems Based on Linear Feedback Shift Registers Using Spreadsheets
Adriana Naydenova Borodzhieva · 2019
The paper describes spreadsheets-based applications implementing and graphically illustrating the processes of encryption and decryption of 3-symbol words in English using cryptosystems based on linear feedback shift registers (LFSRs). Numerous examples obtained by the applications are presented in the paper. Details about the functions used for the implementation are given. Some problems that arise when encrypting and decrypting texts are illustrated by examples. The applications are used in the educational process in the course “Telecommunication Security”, compulsory for Bachelor in the specialty “Internet and Mobile Communications” at the University of Ruse “Angel Kanchev”.