期刊
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS
卷 31, 期 10, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218127421501522
关键词
Combined chaotic map; S-box; lightweight; block cipher
资金
- Shandong Provincial Natural Science Foundation [ZR2019MF054]
- National Natural Science Foundation of China [61902091]
- Fundamental Research Funds for the Central Universities [HIT.NSRIF.2020099]
- Foundation of Science and Technology on Information Assurance Laboratory [KJ-17-004]
- Weihai University Co-construction Project
- Engineering Technology and Research Center of Weihai Information Security
This study introduces a combined chaotic map-based S-box and lightweight block encryption algorithm, showing improved cryptographic performance and meeting the requirements of lightweight algorithms.
Due to high computational cost, traditional encryption algorithms are not suitable for the environments in which resources are limited. In view of the above problem, we first propose a combined chaotic map to increase the chaotic interval and Lyapunov exponent of the existing one-dimensional chaotic maps. Then, an S-box based on the proposed combined chaotic map is constructed. The performances of the designed S-box, such as bijection, nonlinearity, strict avalanche criteria, differential uniformity, the bits independence criterion, and the linear approximation probability, are tested to show that it has better cryptographic performances. Finally, we present a lightweight block encryption algorithm by using the above S-box. The algorithm is based on the generalized Feistel structure and SPN structure. In addtion, the processes of encryption and decryption of our algorithm are almost the same, which reduces the complexity of algorithm implementation. The experimental results show that the proposed encryption algorithm meets the requirements of lightweight algorithms and has good cryptographic characteristics.
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