The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Feb. 06, 2024

Filed:

Dec. 15, 2016
Applicant:

Nec Corporation, Tokyo, JP;

Inventors:

Hikaru Tsuchida, Tokyo, JP;

Kengo Mori, Tokyo, JP;

Toshiyuki Isshiki, Tokyo, JP;

Assignee:

NEC CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/32 (2006.01); H04L 9/08 (2006.01); H04L 67/1017 (2022.01); G06F 21/33 (2013.01);
U.S. Cl.
CPC ...
H04L 9/3234 (2013.01); H04L 9/0861 (2013.01); H04L 9/3247 (2013.01); H04L 67/1017 (2013.01); G06F 21/33 (2013.01); H04L 9/3213 (2013.01); H04L 9/3242 (2013.01); H04L 9/3271 (2013.01);
Abstract

In IaaS (Infrastructure as a Service), when it is desirable to delegate the authority to a user outside a system, a recipient of an access token is designated, thereby preventing illegal distribution of the access token. There is provided an access token system including a generator and a verifier. The generator generates, using secret information of a recipient, a recipient-designated access token for which the recipient is designated, and provides the recipient-designated access token to a user. The verifier verifies that the user who makes access using the recipient-designated access token is the designated recipient.


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