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. 09, 2008
Filed:
Mar. 03, 2003
Akira Hino, Sagamihara, JP;
Eitaroh Kasamatsu, Sagamihara, JP;
Akiyoshi Tanaka, Yokohama, JP;
Lenovo (Singapore) Pte. Ltd., Singapore, SG;
Abstract
Preventing malicious code from reading an authenticator and being falsely authenticated using the read authenticator. Authenticator accepting period detection means detects an authenticator accepting period during which inoperativeness of all unauthenticated programs is guaranteed. Program executing means transmits its authenticator only during the authenticator accepting period. After authentication means is authenticated as genuine, the authentication means computes a one-way function value of the authenticator received from the program executing means and compares the one-way function value X with a stored value Y for the program executing means. If X=Y, then the authentication means authenticates the program executing means.