How to securely outsource the inversion modulo a large composite number

Qianqian Su, Jia Yu, Chengliang Tian, Hanlin Zhang, Rong Hao. How to securely outsource the inversion modulo a large composite number. Journal of Systems and Software, 129:26-34, 2017. [doi]

@article{SuYTZH17,
  title = {How to securely outsource the inversion modulo a large composite number},
  author = {Qianqian Su and Jia Yu and Chengliang Tian and Hanlin Zhang and Rong Hao},
  year = {2017},
  doi = {10.1016/j.jss.2017.04.015},
  url = {https://doi.org/10.1016/j.jss.2017.04.015},
  researchr = {https://researchr.org/publication/SuYTZH17},
  cites = {0},
  citedby = {0},
  journal = {Journal of Systems and Software},
  volume = {129},
  pages = {26-34},
}