期刊
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS
卷 23, 期 4, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218127413500752
关键词
Image encryption; chaos; chosen-plaintext attack; carry bit
资金
- National Natural Science Foundation of China [61100216]
- Scientific Research Fund of Hunan Provincial Education Department [11B124]
- Research Fund of Xiangtan University [2011XZX16]
This paper re-evaluates the security of a chaotic image encryption algorithm called MCKBA/HCKBA and finds that it can be broken efficiently with two known plain-images and the corresponding cipher-images. In addition, it is reported that a previously proposed breaking on MCKBA/HCKBA can be further improved by reducing the number of chosen plain-images from four to two. The two attacks are both based on the properties of solving a composite function involving the carry bit, which is composed of the modulo addition and the bitwise OR operations. Both rigorous theoretical analysis and detailed experimental results are provided.
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