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:
Feb. 14, 2006
Filed:
Apr. 14, 2000
Takayuki Hasebe, Kanagawa, JP;
Seigo Kotani, Kanagawa, JP;
Ryota Akiyama, Kanagawa, JP;
Takaoki Sasaki, Tokyo, JP;
Takayuki Hasebe, Kanagawa, JP;
Seigo Kotani, Kanagawa, JP;
Ryota Akiyama, Kanagawa, JP;
Takaoki Sasaki, Tokyo, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In a signature creating apparatus, a clock generates a time stamp and in which time can be set only by a computer installed in a certificate authority center. Further, connecting sections connects an apparatus ID for specifying an apparatus and the time stamp and personal identification information for identifying an implementor to a plain-text so as to create data for the signature. A signature creating circuit encrypts the data for the signature using a signature creating key or the like and generates the signature. A connecting section connects the signature to the data for the signature and transmits the data as data after signature.