ACCESS MANAGEMENT SYSTEM AND PROGRAM THEREOF

WIPO Patent Application WO/2019/163040

A1

The purpose of the invention is to improve fault tolerance in encryption-based access control. A computer capable of accessing a distributed database in which transactions are managed is caused to function as: an acquisition means for acquiring a first key for indicating the access authority of a first user, the first key being not associated with the first user in the distributed database; a verification means for verifying the first key; a sharing means for sharing information about the first key with one or more second-user computers capable of accessing the distributed database; a generation means for generating a first transaction that includes the information about the first key and the first user's digital signature and requests approval of the use of the first key; and a transmission means for transmitting the first transaction to the one or more second-user computers in order that the first transaction will be digitally signed by the one or more second users and registered in the distributed database.

JP4893269	Authentication system and authentication method
JP2003317070	IC CARD, MOBILE TERMINAL, AND ACCESS CONTROL METHOD
WO/2006/001710	METHOD FOR GENERATING AND VERIFYING AN ELECTRONIC SIGNATURE

KURIHARA JUN (JP)
KUBO TAKESHI (JP)

PCT/JP2018/006358

August 29, 2019

February 22, 2018

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ZETTANT INC (JP)

H04L9/32; H04L9/08

WO2018016160A1

2018-01-25

JP2001520483A	2001-10-30
JP5858506B1	2016-02-10

YOSHIKI ET AL: "examination of certificate management in consortium chains", PROCEEDING OF THE 2017 SYMPOSIUM ON CRYPTOGRAPHY AND INFORMATION SECURITY, 24 January 2017 (2017-01-24)

INABA, Yoshiyuki et al. (JP)

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