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.

Date of Patent:
Aug. 26, 2014

Filed:

Jul. 06, 2010
Applicants:

Shinichi Murao, Chiba, JP;

Masakazu Uehata, Chiba, JP;

Koichi Shibata, Chiba, JP;

Inventors:

Shinichi Murao, Chiba, JP;

Masakazu Uehata, Chiba, JP;

Koichi Shibata, Chiba, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/32 (2006.01); G06F 15/16 (2006.01); G06F 21/64 (2013.01);
U.S. Cl.
CPC ...
G06F 21/64 (2013.01); H04L 9/3247 (2013.01); H04L 9/3297 (2013.01); H04L 9/3236 (2013.01); H04L 9/3268 (2013.01); H04L 2209/68 (2013.01);
Abstract

A long-term signature server includes a signing target data acquisition function for acquiring signing target data, a signature data transmission function for transmitting to a long-term signature terminal signature data for the electronic-signing of the acquired signing target data, a signature value reception function for receiving an electronic signature value of the signing target data generated using the signature data transmitted from the long-term signature terminal, a time stamp acquisition function for acquiring a time stamp corresponding to the received electronic signature value, and a signature data generation function for generating basic signature data using at least the acquired signing target data, the received electronic signature value, and the acquired time stamp.


Find Patent Forward Citations

Murao, Shinichi. (2014). Long-term signature server, long-term signature terminal, and long-term signature verification server (U.S. Patent No. 8819441). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8819441

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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