Title:
HOMOMORPHIC-ENCRYPTION-BASED DYNAMIC DATA PROCESSING METHOD CAPABLE OF INFINITE COMPUTATION WITHOUT REQUIRING REBOOTING AND CONTROL SIGNAL RE-ENCRYPTION
Document Type and Number:
WIPO Patent Application WO/2022/154241
Kind Code:
A1
Abstract:
The present invention relates to a homomorphic-encryption-based dynamic control data processing method and, more particularly, to a homomorphic-encryption-based dynamic data processing method capable of infinite computation without rebooting and control data re-encryption. The dynamic data processing method according to the present invention comprises: a first step of dividing a state equation into a Schur stable region (zs(t+1))=Fszs(t)+Gsy(t)) and an unstable region (zu(t+1)=Fuzu(t)+Guy(t)); a second step of approximating the Schur stable region; and a third step of approximating the unstable region. The third step is a step of approximating same to zu(t+1)≒F0zu(t)+Guy(t).
Inventors:
KIM JUNSOO (KR)
SHIM HYUNGBO (KR)
SHIM HYUNGBO (KR)
Application Number:
PCT/KR2021/017080
Publication Date:
July 21, 2022
Filing Date:
November 19, 2021
Export Citation:
Assignee:
SEOUL NAT UNIV R&DB FOUNDATION (KR)
International Classes:
H04L9/00
Foreign References:
| KR20180092199A | 2018-08-17 | |||
| US20190182216A1 | 2019-06-13 | |||
| KR20140114933A | 2014-09-30 | |||
| KR20140071605A | 2014-06-12 |
Other References:
CHEON JUNG HEE; HAN KYOOHYUNG; KIM HYUNTAE; KIM JUNSOO; SHIM HYUNGBO: "Need for Controllers Having Integer Coefficients in Homomorphically Encrypted Dynamic System", 2018 IEEE CONFERENCE ON DECISION AND CONTROL (CDC), IEEE, 17 December 2018 (2018-12-17), pages 5020 - 5025, XP033503700, DOI: 10.1109/CDC.2018.8619600
Attorney, Agent or Firm:
BACK, Doehyun (KR)
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