Title:
VERIFICATION INFORMATION ADDING DEVICE, VERIFICATION DEVICE, INFORMATION MANAGEMENT SYSTEM, METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2018/179293
Kind Code:
A1
Abstract:
This verification information adding device (51) is provided with a nonce setting means (511) for performing a setting process in which: in order for a process value obtained when a one-way function is applied to a first data block having a prescribed data structure that has a nonce area in which is set a nonce that is verification information, or applied to data based on the first data block, to satisfy a prescribed rule, a nonce is set to a prescribed nonce area of the first data block; and a value is set to the nonce area and the process value is actually calculated, whereby the nonce is set, the nonce setting means (511) performing a prescribed data process, in which a secret key of a host device is used, on a prescribed data area of the first data block that includes the nonce area each time a value is set to the nonce area in the setting process or each time a nonce that satisfies the rule is set to the nonce area by the setting process.
Inventors:
INOKUCHI MASAKI (JP)
Application Number:
PCT/JP2017/013473
Publication Date:
October 04, 2018
Filing Date:
March 30, 2017
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04L9/32; G06F21/60; G06F21/64; G06Q20/38
Foreign References:
| JP2003280972A | 2003-10-03 | |||
| US20160342977A1 | 2016-11-24 |
Other References:
YASUYUKI FUCHITA: "Block Chain to Kin'yu Torihiki no Kakushin", NOMURA CAPITAL MARKETS QUARTERLY, vol. 19, no. 2, 1 November 2015 (2015-11-01), pages 11 - 35, XP009507516
Attorney, Agent or Firm:
IWAKABE Fuyuki et al. (JP)
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