Adaptive image encryption scheme based on chaotic map

作者：Qiu Jing; Liao Xiaofeng^*; Xiao Di; Xiang Tao

来源：High Technology Letters, 2013, 19(1): 76-81.

DOI：10.3772/j.issn.1006-6748.2013.01.014

• Chaotic key stream
• Chaotic map
• Chosen-plaintext attack
• Image encryption scheme
• Image encryptions
• Post processing
• Statistical properties
• Substitution-diffusion

Most of the existing image encryption schemes with the substitution-diffusion structure are not secure and efficient. In this letter, a chaos-based pseudo-random bit generator with good statistical properties is proposed, where a simple post-processing by compressing is employed. A new adaptive image encryption scheme with the substitution-diffusion architecture is designed using the new pseudo-random bit generator. In the scheme, the session key for the pseudo-random bit generator is dependent on the content of the image which ensures that the scheme can effectively resist known-plaintext and chosen-plaintext attacks. Theoretical analysis and computer simulation indicate that the proposed algorithm is efficient and highly secure.

• 出版日期2013