Privacy amplification means that the communication parties extract a shorter but highly confidential string [S] by negotiating on the public channel while sharing a partially confidential string S. Enemy only knows part of the information of the string S and the information that it knows about [S] is almost negligible. Recently. people use the generative adversarial networks (GANs) to... https://www.greenresourcesredux.com/product-category/hand-sanitizers/