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:
Sep. 15, 2009
Filed:
Jul. 09, 2004
Chikashi Okamoto, Yokohama, JP;
Chikashi Okamoto, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
For providing a service providing system and an authentication system, and also a signature generating apparatus, a service utilizing apparatus and a verification apparatus, enabling automatic access, being widely or commonly usable in a communication means thereof, and achieving an authentication function of high security, a system comprises a signature generating apparatus, a service utilizing apparatus, a verification apparatusand a service providing apparatus, wherein the signature generating apparatushas a means for generating a generation key and a verification key, and an electronic signature generating means using the generation key produced, thereby transmitting an electronic signature to the service utilizing apparatus, while transmitting the verification key to the verification apparatus, wherein the service utilizing apparatushas a service request means, thereby transferring a number to the signature generating apparatus, while transmitting the electronic signature to the verification apparatusand the service to be utilized to the verification apparatus, wherein the verification apparatushas a number producing means for use of producing the electronic signature, a verification key holding means, and an electronic signature verification means using the verification key therein, thereby transmitting the number to the service utilizing apparatus, while transferring a service request to the service providing apparatus