SIGNATURE PROCESSING APPARATUS, SIGNATURE PROCESSING METHOD, SIGNATURE PROCESSING SYSTEM, AND COMPUTER-READABLE RECORDING MEDIUM

Title:

SIGNATURE PROCESSING APPARATUS, SIGNATURE PROCESSING METHOD, SIGNATURE PROCESSING SYSTEM, AND COMPUTER-READABLE RECORDING MEDIUM

Document Type and Number:

WIPO Patent Application WO/2020/039527

Kind Code:

A1

Abstract:

This signature processing apparatus 1 comprises: a secret key information generating unit 2 which generates, on the basis of preset master secret key information and application identification information for identifying an application, secret key information corresponding to the application identification information; a signature information generating unit 3 which generates, on the basis of the secret key information and message information to be signed, signature information corresponding to the message information; and a secret unit 4 which has a secret area for temporarily storing the master secret key information, the secret key information, or both, in a process of generating the secret key information or the signature information.

Inventors:

ISSHIKI TOSHIYUKI (JP)
FUKUDA HARUNA (JP)
TAMIYA HIROTO (JP)

Application Number:

PCT/JP2018/031055

Publication Date:

February 27, 2020

Filing Date:

August 22, 2018

Export Citation:

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Assignee:

NEC CORP (JP)

International Classes:

H04L9/10; H04L9/08; H04L9/14; H04L9/32

Foreign References:

US20120249292A1	2012-10-04
JP2017108293A	2017-06-15
JP2014068140A	2014-04-17