An Encryption Scheme Based on Synchronization of Two-Layered Complex Dynamical Networks

Hui Liu, Haibo Wan, Chi Kong Tse, Jinhu Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

68 Citations (Scopus)


A novel encryption scheme based on complex chaotic networks is proposed in this paper. Compared with a single chaotic system, a network of chaotic systems possesses complex dynamic characteristics, which can be used in encryption to enhance security. We adopt the drive-response synchronization method to synchronize two identical chaotic networks at the transmitter and receiver. Analysis on encryption security shows that key space is enlarged exponentially with respect to the number of nodes in the drive network, and also shows that the encryption system is highly sensitive to parameter mismatch. The proposed scheme is competent in carrying out encryption tasks of large data. Both theoretical and numerical results demonstrate that the proposed scheme is feasible for implementation in image and data encryption.
Original languageEnglish
Pages (from-to)2010-2021
Number of pages12
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Issue number11
Publication statusPublished - 1 Nov 2016


  • Chaotic systems
  • complex dynamical networks
  • encryption scheme
  • node-to-node synchronization
  • two-layered networks

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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