Is extracting data the same as possessing data?

Douglas R. Stinson, Jalaj Upadhyay. Is extracting data the same as possessing data?. J. Mathematical Cryptology, 8(2):189-207, 2014. [doi]

@article{StinsonU14,
  title = {Is extracting data the same as possessing data?},
  author = {Douglas R. Stinson and Jalaj Upadhyay},
  year = {2014},
  doi = {10.1515/jmc-2013-0034},
  url = {http://dx.doi.org/10.1515/jmc-2013-0034},
  researchr = {https://researchr.org/publication/StinsonU14},
  cites = {0},
  citedby = {0},
  journal = {J. Mathematical Cryptology},
  volume = {8},
  number = {2},
  pages = {189-207},
}