Chaos‐based fast colour image encryption scheme with true random number keys from environmental noise. Issue 5 (23rd March 2017)

• Record Type: Journal Article
• Authors: Liu, Hongjun; Kadir, Abdurahman; Sun, Xiaobo
• Is Part Of: IET image processing. Volume 11:Issue 5(2017)
• Page Start: 324
• Page End: 332
• Publication Date: 2017-03-23
• Subjects: cryptography -- image colour analysis -- computational complexity; word length 256 bit -- security -- time complexity -- cryptosystem -- statistical tests -- exclusive OR -- TestU01 -- Liu system -- one‐time initial values -- hash value -- chaotic system -- randomly sampled noise signal -- environmental noise -- true random number keys -- fast colour image encryption scheme; Image processing -- Periodicals; 621.36705
• DOI: 10.1049/iet-ipr.2016.0040
• Languages: English
• ISSNs: 1751-9659

Abstract

Abstract : The paper proposes a chaos‐based colour image encryption scheme, the highlight is that the randomly sampled noise signal is applied to serve as the initial values of a chaotic system. The 256‐bit hash value of noise is transformed into the one‐time initial values of the Liu system. The sequences generated by Liu system are subjected to three batteries of TestU01. Exclusive OR, the only operation, is applied to diffuse the pixels, and some measures are taken to speed up the encryption process. Finally, some statistical tests are performed to assess reliability and efficiency of the proposed cryptosystem in terms of time complexity and security.