Útoky na kryptografické moduly ; Attacks on Cryptographic Modules

The conventional way of cryptanalysis is based on the cryptographic algorithms weak points examine. The attack model of conventional cryptanalysis covers mathematical description of the cryptographic algorithm used. This model is without any relation to the physical model implementation and without any relation to the real environment. Cryptographic algorithms currently used in the combination with strong cipher keys are almost unbreakable and the conventional cryptanalysis is ineffective. The new way of cryptanalysis employs the side channels. The model of cryptanalysis using side channels is enhanced with physical behavior of the module performing the cryptographic operations. This dissertation thesis deals with cryptographic module description and studies influence of these side channels on the security of this module.