TECHNIQUES FOR PRIVACY-PRESERVING DATA PROCESSING ACROSS MULTIPLE COMPUTING NODES

摘要

A method used in a first environment (102) includes obtaining (402) first data (304b) to be processed in a second environment (104), homomorphically encrypting (410) the first data to produce first encrypted data (304d), and providing (410) the first encrypted data to the second environment. The method also includes receiving (412) supplemental data (332) from the second environment, homomorphically encrypting (414) the supplemental data to produce encrypted supplemental data (333), and providing (414) the encrypted supplemental data to the second environment. The method further includes receiving (416) second encrypted data (304e) from the second environment and homomorphically decrypting (418) the second encrypted data to recover data processing results (311b) generated in the second environment using the first encrypted data and the encrypted supplemental data.