Digital information encryption using chaos synchronization

H. Zhang, G. Zhou, Z. P. Jiang, Yao Wang

Research output: Contribution to journalArticlepeer-review


In this paper, we present a novel digital encryption algorithm using discrete-time chaotic synchronization. The boundedness property of chaotic systems is exploited to realize the encryption and decryption procedure. Different from previous approaches of encrypting messages by chaotic systems, the proposed method focuses on digital signals instead of analog ones. Moreover, after synchronization, the transmitted signal has the same bit-length as the information data which is to be transmitted. The chaotic signal in the encryptor depends on the information message and cannot be predicted by the decryptor independently. Our simulation results based on an application to image encryption with Hénon map validate the proposed method.

Original languageEnglish (US)
Pages (from-to)799-812
Number of pages14
JournalDynamics of Continuous, Discrete and Impulsive Systems Series B: Applications and Algorithms
Issue number6
StatePublished - Dec 2003


  • Chaos synchronization
  • Digital encryption
  • Discrete-time
  • Feedback
  • Observed

ASJC Scopus subject areas

  • Discrete Mathematics and Combinatorics
  • Applied Mathematics


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