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.
Patent No.:
Date of Patent:
Apr. 30, 2024
Filed:
May. 27, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Fumitaka Hoshino, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
An anonymous signature system in which a signature σ is anonymized by an agent specified by a signer, includes computers each including a memory and a processor configured to, from a security parameter, generate a system parameter ρ independent of the agent; from ρ, generate an agent secret key w and an agent public key g; from ρ, generate a secret key x and a public key y of the signer; from x, a message m on which σ is to be put, and g, generate σ to be put on m; from an identifier i of the signer, w, σ, a ring L representing a group to which the signer belongs, a list yof public keys y of signers in L, and m, generate a ring signature σ′ by anonymizing σ; and from L, y, m, and σ′, output a verification result b form.