Lineární a diferenciální kryptoanalýza

Abstract

The main topic of this thesis is the Linear and Differential Cryptanalysis. However, work also deals in general with the cryptology and the cryptanalysis as such. In detail are discussed the block encryption algorithms DES, AES (with symmetric encryption) and their simplified versions, then there are described different methods of the cryptanalysis, types of attacks on different types of encryptions, and of course the advantages and disadvantages of the block encryption algorithms are also discussed. The aim of this thesis was to examine particular field of the linear and differential cryptanalysis in detail, and then design and implement an application for demonstration and illustration of various methods of cryptanalysis in practice.