Cryptanalysis and improvement of two hyper-chaos-based image encryption schemes

作者：

Highlights：

• Two image encryption schemes suffer from the problem of low security-sensitivity.

• An improvement is proposed to fix the weakness found.

• Confusion and diffusion are enhanced such that attacks are turned infeasible.

摘要

•Two image encryption schemes suffer from the problem of low security-sensitivity.•An improvement is proposed to fix the weakness found.•Confusion and diffusion are enhanced such that attacks are turned infeasible.

论文关键词：Cryptanalysis,Chaotic system,Image encryption,Hyper-chaos

论文评审过程：Received 18 November 2014, Revised 11 March 2015, Accepted 11 March 2015, Available online 20 March 2015.

论文官网地址：https://doi.org/10.1016/j.image.2015.03.003