451 research outputs found
Cryptanalysis of a Chaotic Image Encryption Algorithm Based on Information Entropy
Recently, a chaotic image encryption algorithm based on information entropy
(IEAIE) was proposed. This paper scrutinizes the security properties of the
algorithm and evaluates the validity of the used quantifiable security metrics.
When the round number is only one, the equivalent secret key of every basic
operation of IEAIE can be recovered with a differential attack separately. Some
common insecurity problems in the field of chaotic image encryption are found
in IEAIE, e.g. the short orbits of the digital chaotic system and the invalid
sensitivity mechanism built on information entropy of the plain image. Even
worse, each security metric is questionable, which undermines the security
credibility of IEAIE. Hence, IEAIE can only serve as a counterexample for
illustrating common pitfalls in designing secure communication method for image
data.Comment: 9 pages, 6 figures, IEEE Access, 201
Some hints for the design of digital chaos-based cryptosystems: lessons learned from cryptanalysis
In this work we comment some conclusions derived from the analysis of recent
proposals on the field of chaos-based cryptography. These observations remark
the main problems detected in some of those schemes under examination.
Therefore, this paper is a list of what to avoid when considering chaos as
source of new strategies to conceal and protect information
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