title: Evaluation of Secure Computation in a Distributed Healthcare Setting.
abstract: Issues related to ensuring patient privacy and data ownership in clinical repositories prevent the growth of translational research. Previous studies have used an aggregator agent to obscure clinical repositories from the data user, and to ensure the privacy of output using statistical disclosure control. However, there remain several issues that must be considered. One such issue is that a data breach may occur when multiple nodes conspire. Another is that the agent may eavesdrop on or leak a user's queries and their results. We have implemented a secure computing method so that the data used by each party can be kept confidential even if all of the other parties conspire to crack the data. We deployed our implementation at three geographically distributed nodes connected to a high-speed layer two network. The performance of our method, with respect to processing times, suggests suitability for practical use.
authors: Department of Medical Informatics, Ehime University Department of Integrated Medicine.
authors: Eizen
authors: E
authors: Kimura
authors: NTT Secure Platform Labs., NTT Corporation.
authors: Koki
authors: K
authors: Hamada
authors: NTT Secure Platform Labs., NTT Corporation.
authors: Ryo
authors: R
authors: Kikuchi
authors: NTT Secure Platform Labs., NTT Corporation.
authors: Koji
authors: K
authors: Chida
authors: Division of Medical Information Technology and Administrative Planning, Kyoto University Hospital.
authors: Kazuya
authors: K
authors: Okamoto
authors: Medical Informatics, Osaka University.
authors: Shirou
authors: S
authors: Manabe
authors: Division of Medical Information Technology and Administrative Planning, Kyoto University Hospital.
authors: Tomohiko
authors: T
authors: Kuroda
authors: Medical Informatics, Osaka University.
authors: Yasushi
authors: Y
authors: Matsumura
authors: Medical Informatics, Osaka University.
authors: Toshihiro
authors: T
authors: Takeda
authors: Medical Informatics, Osaka University.
authors: Naoki
authors: N
authors: Mihara
mesh_terms: D016494:Computer Security / Q000592:standards*; D003219:Confidentiality / Q000592:standards*; D066275:Health Information Exchange / Q000592:standards*; D006801:Humans; D012985:Software Design