公开(公告)号：EP3274904A4

公开(公告)日：2018-08-01

申请号：EP16769202

申请日：2016-02-03

Applicant: INTEL CORP

Inventor： CHOW RICHARD ,  WANG EDWARD ,  PHEGADE VINAY

IPC: G06F21/62 ,  G06F17/30 ,  G06F21/60

CPC classification number: G06F21/6218 ,  G06F17/30312 ,  G06F17/30584 ,  G06F17/30961 ,  G06F21/57 ,  G06F21/6227 ,  G06F21/6263 ,  G06F2221/2123 ,  H04L63/0428 ,  H04L63/102

Abstract: Systems, methods, and apparatus to provide private information retrieval. A disclosed example system includes a first trusted processing unit to store a first portion of data such that entities other than the first trusted processing unit are unable to access the first portion of the data in the first trusted processing unit; a second trusted processing unit to store a second portion of the data such that entities other than the second trusted processing unit are unable to access the second portion of the data in the second trusted processing unit; and a third trusted processing unit to: determine that a data element specified in a request is stored in the first trusted processing unit; request the data element from the first trusted processing unit; send a dummy request to the second trusted processing unit; and send the data element to a requester.