Christopher A. Choquette-ChooNatalie DullerudAdam DziedzicYunxiang Zhang 0003Somesh JhaNicolas PapernotXiao Wang 0012CaPC Learning: Confidential and Private Collaborative Learning.2021abs/2102.05188CoRRhttps://arxiv.org/abs/2102.05188db/journals/corr/corr2102.html#abs-2102-05188