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A bit-encryption algorithm for JPEG2000 image based on chaos

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5 Author(s)
Yunpeng Zhang ; Coll. of Software & Microelectron., Nothwestern Polytech. Univ., Xi''an, China ; Zhengjun Zhai ; Xiaobin Cai ; Hui Shi
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Focusing on the feature of JPEG2000 data structure, this paper researched the encryption algorithms for JPEG2000 by analyzing JPEG2000 encoding and the existing image encryption, the encryption rule for JPEG2000 was found that we should make the compression unaffected or affected to a small degree, at the same time, the security can be improved. Through further research, the author has proposed a new encryption scheme that uses chaotic system to encrypt the coefficient-bit and the context according to the plane coding, in the view of JPEG2000 image compression standard. For the data compressed and encrypted, the experiment indicated that encryption did not increase JPEG2000 codec's burden. Since it was carried out at the same time as coding/decoding, the scheme makes the compression ratio influence small, retains the original compression algorithm's stream elasticity, and also enjoys low cost and high security. Therefore, it is proved to be an effective encryption/decryption resolution for JPEG2000. So the scheme is well for application.

Published in:

Control and Automation, 2009. ICCA 2009. IEEE International Conference on

Date of Conference:

9-11 Dec. 2009