@misc{cryptoeprint:2018:495, author = {Changyu Dong and Grigorios Loukides}, title = {Approximating Private Set Union/Intersection Cardinality with Logarithmic Complexity}, howpublished = {Cryptology ePrint Archive, Report 2018/495}, year = {2018}, url = {https://eprint.iacr.org/2018/495}, }