A New Blind Attack Procedure for DCT-Based Image Encryption with Spectrum Learning

@article{Li2007ANB,
  title={A New Blind Attack Procedure for DCT-Based Image Encryption with Spectrum Learning},
  author={Weihai Li and Yuan Yuan},
  journal={Int. J. Image Graphics},
  year={2007},
  volume={7},
  pages={481-496}
}
It is an important problem nowadays to ensure the security of encrypted multimedia contents on the Internet. In this paper, a new blind attack procedure called NZCA is proposed to decrypt images that are encrypted by DCT-based methods. It threatens almost all existing DCT-based image encryption methods without the need of knowing the encryption algorithm details. The parameters of the NZCA can be adaptively selected via unsupervised learning with spectrum analysis of image projection. The… CONTINUE READING