Computer Science ›› 2017, Vol. 44 ›› Issue (6): 133-138.doi: 10.11896/j.issn.1002-137X.2017.06.022

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Dynamic Key AES Encryption Algorithm Based on Compound Chaotic Sequence

YAN Le-le and LI Hui   

  • Online:2018-11-13 Published:2018-11-13

Abstract: To solve the traditional AES(Advanced Encryption Standard) algorithm’s security reduction problem caused by the unchanged seed key and fixed key space,combining with the chaotic sequence cipher and AES algorithm,this paper proposed a dynamic seed key AES encryption algorithm based on compound chaotic sequences and finished the software implementations.The algorithm uses the private key to construct the same-parameters’ dual chaotic system at both ends of the encryption and decryption.The chaotic sequence is generated and cross-combined through two chaotic systems(logistic and tent) by a number of iterations that related to the plaintext length,and then mapped into the dynamic initial seed keys for the AES block cipher.Through the security analysis,statistical test and performance test,the analytical results demonstrate that the proposed algorithm has the advantages of high security,strong adaptability and fast operation speed,and it is very suitable for cross platform wireless secure data transmission applications.

Key words: Logistic map,Tent map,Chaotic sequences,AES algorithm

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