Title:
CALCULATING DEVICE RELATING TO CONCEALMENT COMPUTATION SYSTEM EMPLOYING DISTRIBUTION OF SECRETS
Document Type and Number:
WIPO Patent Application WO/2016/129363
Kind Code:
A1
Abstract:
Distributed values of concealed secret information are obtained from secret information by concealing the secret information. A combined value α is generated from random numbers α1 to αk, which are k or more items of secret information (42). The combined value α is multiplied by new secret information a to generate concealed secret information αa, and distributed values Wa'(xi) of the concealed secret information, and distributed values Wa1(xi) to Wak(xi) of each of the random numbers, which are the k or more items of secret information, are calculated (44). The distributed values Wa'(xi) and Wa1(xi) to Wak(xi) are transmitted to first to nth servers (46). The distributed values Wa'(xi) of the concealed secret information αa, obtained by concealing the secret information α1 to αk, can be obtained from the secret information α1 to αk.
Inventors:
IWAMURA KEIICHI (JP)
Application Number:
PCT/JP2016/051934
Publication Date:
August 18, 2016
Filing Date:
January 22, 2016
Export Citation:
Assignee:
UNIV TOKYO SCIENCE FOUND (JP)
International Classes:
H04L9/08; G09C1/00
Foreign References:
| JP2014138349A | 2014-07-28 | |||
| JP2004341152A | 2004-12-02 |
Attorney, Agent or Firm:
NAKAJIMA, Jun et al. (JP)
Nakajima 淳 (JP)
Nakajima 淳 (JP)
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