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arXiv · 1806.09523

Cryptanalysis of a Chaotic Key based Image Encryption Scheme

Pratyusa Mukherjee·Krishnendu Rarhi·Abhishek Bhattacharya
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Abstract

Security of multimedia data is a major concern due to its widespread transmission over various communication channels. Hence design and study of good image encryption schemes has become a major research topic. During the last few decades, there has been a increasing in chaos-based cryptography. This paper proposes an attack on a recently proposed chaos based image encryption scheme. The cryptosystem under study proceed by first shuffling the original image to disturb the arrangement of pixels by applying a chaotic map several times. Second, a keystream is generated using Chen's chaotic system to mix it with the shuffled pixels to finally obtain the cipher image. A chosen ciphertext attack can be done to recover the system without any knowledge of the key. It simply demands two pairs of plaintext-ciphertext to completely break the cryptosystem.

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Pratyusa Mukherjee, Krishnendu Rarhi, Abhishek Bhattacharya. 2018-06-21. Cryptanalysis of a Chaotic Key based Image Encryption Scheme. https://doi.org/10.1007/978-981-13-1501-5_14

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