Title:
SECRET COMPUTATION SERVER, TRAIL MANAGEMENT METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/014611
Kind Code:
A1
Abstract:
The purpose of the present invention is to facilitate verification of correctness of data to be subjected to secret computation. A secret computation server is provided with a computation processing unit which performs a secret computation using data x received from a client to compute a computation result R, and a trail registration unit which causes a predetermined trail storage system to hold first trail data for proving identity of the data x, the identity being computed from the data x, and second trail data for proving a relationship between the data x and the computation result R. The predetermined trail storage system manages each of the first and second trail data in a non-rewritable manner, and provides the data to a predetermined audit node.
Inventors:
TSUCHIDA HIKARU (JP)
OHARA KAZUMA (JP)
ARAKI TOSHINORI (JP)
AMADA TAKUMA (JP)
OHARA KAZUMA (JP)
ARAKI TOSHINORI (JP)
AMADA TAKUMA (JP)
Application Number:
PCT/JP2019/029029
Publication Date:
January 28, 2021
Filing Date:
July 24, 2019
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G06F21/64
Domestic Patent References:
| WO2017065209A1 | 2017-04-20 | |||
| WO2018190285A1 | 2018-10-18 |
Foreign References:
| JP2009048283A | 2009-03-05 | |||
| JP2011244321A | 2011-12-01 |
Attorney, Agent or Firm:
KATO, Asamichi (JP)
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