Novel hyper chaotic color image encryption based on pixel and bit level scrambling with diffusion

作者：

Highlights：

• A novel and efficient method for keystream generation from a 384-bits secret key.

• Novel methods are introduced for permutation and diffusion process.

• The double scrambling performed in permutation phase ensures higher security.

• The system guarantees better security in compared with other state-of-the-art schemes.

摘要

•A novel and efficient method for keystream generation from a 384-bits secret key.•Novel methods are introduced for permutation and diffusion process.•The double scrambling performed in permutation phase ensures higher security.•The system guarantees better security in compared with other state-of-the-art schemes.

论文关键词：Confusion and diffusion,Image encryption,Keystream generation,Lorenz system,Security analysis

论文评审过程：Received 6 September 2020, Revised 21 May 2021, Accepted 7 September 2021, Available online 16 September 2021, Version of Record 25 September 2021.

论文官网地址：https://doi.org/10.1016/j.image.2021.116495