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On the security of a class of diffusion mechanisms for image encryption

journal contribution
posted on 2018-04-01, 00:00 authored by Y L Zhang, Y Liu, F Pareschi, Yushu Zhang, K-W Wong, R Rovatti, G Setti
The need for fast and strong image cryptosystems motivates researchers to develop new techniques to apply traditional cryptographic primitives in order to exploit the intrinsic features of digital images. One of the most popular and mature technique is the use of complex dynamic phenomena, including chaotic orbits and quantum walks, to generate the required key stream. In this paper, under the assumption of plaintext attacks we investigate the security of a classic diffusion mechanism (and
of its variants) used as the core cryptographic primitive in some image cryptosystems based on the aforementioned complex dynamic phenomena. We have theoretically found that regardless of the key schedule process, the data complexity for recovering each element of the equivalent secret key from these diffusion mechanisms is only O(1). The proposed analysis is validated by means of numerical examples. Some additional cryptographic applications of this paper are also discussed.

History

Journal

IEEE transactions on cybernetics

Volume

48

Issue

4

Pagination

1163 - 1175

Publisher

Institute of Electrical and Electronics Engineers

Location

Piscataway, N.J.

ISSN

2168-2267

eISSN

2168-2275

Language

eng

Publication classification

C Journal article; C1.1 Refereed article in a scholarly journal

Copyright notice

2017, IEEE