Talk · IEEE International Conference on Smart Information Systems and Technologies · April 28, 2022
Analysis of Block Ciphers Characteristics for CBC and OFB Modes of Operation When Input Data are Shifted
Zhanna Alimzhanova, Dauren Nazarbayev, Akzer Tleubergen, Aivar Muratovich Alimzhanov
Abstract
This article presents a comparative analysis of DES and AES block ciphers in the CBC and OFB modes of operation. To identify some regularities, the authors applied the multiple encryption method to determine the dynamics of changes in ciphertexts in CBC and OFB modes of operation. As a result of the study with different control input data, some regularities were obtained, in CBC symmetric matrices are obtained, in OFB a clear periodicity with respect to a certain number of iterations of data encryption is evident. For a visual presentation of the research results were presented in the form of two-dimensional matrices.
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