Title:
SECURE SURVIVAL TIME DATA PROCESSING SYSTEM, SECURE SURVIVAL TIME DATA PROCESSING DEVICE, SECURE SURVIVAL TIME DATA PROCESSING METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/064911
Kind Code:
A1
Abstract:
The present invention provides a technology for computing the number of survivals and the number of deaths while concealing survival time data. This secure survival time data processing system comprises: a group data position computation means that computes, from shares [[g]] of columns g of values of groups of survival time data included in a survival time data set D, a share [[gA]] of a column gA and a share [[gB]] of a column gB represented by a predetermined expression; a number-of-group data computation means that computes, from shares [[t]] of columns t of values of times of the survival time data included in the survival time data set D, the share [[gA]], and the share [[gB]], a share [[sA]] and a share [[sB]] by [[sA]] = GroupSum([[gA]], [[t]]), and [[sA]] = GroupSum([[gB]], [[t]]); and a number-of-survivals computation means that computes, from the share [[sA]] and the share [[sB]], a share [[nA]] and a share [[nB]].
Inventors:
ICHIKAWA ATSUNORI (JP)
IKARASHI DAI (JP)
HAMADA KOKI (JP)
KIKUCHI RYO (JP)
SUDO HIROKI (JP)
MISHINA IBUKI (JP)
IKARASHI DAI (JP)
HAMADA KOKI (JP)
KIKUCHI RYO (JP)
SUDO HIROKI (JP)
MISHINA IBUKI (JP)
Application Number:
PCT/JP2019/038978
Publication Date:
April 08, 2021
Filing Date:
October 02, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G09C1/00; G06F21/32
Other References:
VON MALTITZ, MARCEL: "Secure and Privacy-Preserving Services based on Secure Multiparty Computation, Network architectures and Services [ online ], NET- 2019-07-2", DISSERTATION, July 2019 (2019-07-01), pages 85 - 106, XP055811948, Retrieved from the Internet [retrieved on 20200612], DOI: 10.2313/NET- 2019-07-02
ABSPOEL, MARK ET AL.: "D2.3 Use-case Specific Algorithm", SODA PROJECT, 30 September 2019 (2019-09-30), pages 35 - 43, XP055811951, Retrieved from the Internet [retrieved on 20200612]
CHEN TINGTING, ZHONG SHENG: "Privacy-Preserving Models for Comparing Survival Curves Using the Logrank Tes t", TECHNICAL REPORTS, 19 April 2011 (2011-04-19), pages 1 - 12, XP055811956, Retrieved from the Internet [retrieved on 20200612]
KIRIBUCHI NAOTO ET AL.: "Programmable secret calculation program MEVAL3", PROCEEDINGS OF 2018 SYMPOSIUM ON CRYPTOGRAPHY AND INFORMATION SECURITY (SCIS 2018), 23 January 2018 (2018-01-23), pages 1 - 8
ABSPOEL, MARK ET AL.: "D2.3 Use-case Specific Algorithm", SODA PROJECT, 30 September 2019 (2019-09-30), pages 35 - 43, XP055811951, Retrieved from the Internet
CHEN TINGTING, ZHONG SHENG: "Privacy-Preserving Models for Comparing Survival Curves Using the Logrank Tes t", TECHNICAL REPORTS, 19 April 2011 (2011-04-19), pages 1 - 12, XP055811956, Retrieved from the Internet
KIRIBUCHI NAOTO ET AL.: "Programmable secret calculation program MEVAL3", PROCEEDINGS OF 2018 SYMPOSIUM ON CRYPTOGRAPHY AND INFORMATION SECURITY (SCIS 2018), 23 January 2018 (2018-01-23), pages 1 - 8
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
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