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:
Oct. 13, 2015
Filed:
Dec. 16, 2008
Takashi Yoshioka, Kawasaki, JP;
Takato Ohashi, Fukuoka, JP;
Kiyohide Yamashita, Fukuoka, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A digital signature program includes computer-executable instructions for giving a numerical value in a state where header information necessary for playback of each partial data item may be added to the partial data item resulting from the division to a one-way function to generate an output value sequence of the one-way function concerning the multiple partial data items. The program also includes computer-executable instructions for generating binary trees concerning the streaming data, having leaves including only the output values in the output value sequence; and computer-executable instructions for using an output value indicating a root of the generated binary trees to generate a digital signature of a signer for the streaming data.