@misc{sirichotedumrong2020visual,
  title={Visual Security Evaluation of Learnable Image Encryption Methods against Ciphertext-only Attacks},
  author={Warit Sirichotedumrong and Hitoshi Kiya},
  year={2020},
  eprint={2010.06198},
  archivePrefix={arXiv},
  primaryClass={cs.CR},
  url={https://arxiv.org/abs/2010.06198}
}