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:
Nov. 07, 2006
Filed:
Mar. 22, 2001
Kunihiko Miyazaki, Yokohama, JP;
Hiroshi Yoshiura, Tokyo, JP;
Seiichi Susaki, Yokohama, JP;
Ryoichi Sasaki, Fujisawa, JP;
Kazuo Takaragi, Ebina, JP;
Hisashi Toyoshima, Hachioji, JP;
Takeshi Matsuki, Musashino, JP;
Kunihiko Miyazaki, Yokohama, JP;
Hiroshi Yoshiura, Tokyo, JP;
Seiichi Susaki, Yokohama, JP;
Ryoichi Sasaki, Fujisawa, JP;
Kazuo Takaragi, Ebina, JP;
Hisashi Toyoshima, Hachioji, JP;
Takeshi Matsuki, Musashino, JP;
Hitachi, Ltd., , JP;
Abstract
According to the present invention, techniques, including a method and system, for restoring and/or validating data and/or associated signature log entries are provided. One embodiment of the present invention provides a method for validating a restored message, having an entry generated in a signature log for a message, where the entry includes cryptographic information associated with the message; Next, when said message is lost, the restored message is generated responsive to a request; and the restored message is validated using the signature log. In another embodiment a method for validating a selected log entry by using a signature log having a plurality of recorded log entries is provided. The method includes: computing a cryptographic value for the selected log entry; and determining if the cryptographic value is part of another recorded log entry.