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. 18, 2007
Filed:
Feb. 13, 2001
Mikio Hashimoto, Chiba, JP;
Kensaku Fujimoto, Kanagawa, JP;
Kenji Shirakawa, Kanagawa, JP;
Keiichi Teramoto, Tokyo, JP;
Takeshi Saito, Tokyo, JP;
Mikio Hashimoto, Chiba, JP;
Kensaku Fujimoto, Kanagawa, JP;
Kenji Shirakawa, Kanagawa, JP;
Keiichi Teramoto, Tokyo, JP;
Takeshi Saito, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki-shi, JP;
Abstract
A scheme for distributing executable programs through a network from a program distribution device to a client device having a tamper resistant processor which is provided with a unique secret key and a unique public key corresponding to the unique secret key in advance is disclosed. In this scheme, a first communication path is set up between the program distribution device and the client device, and a second communication path directly connecting the program distribution device and the tamper resistant processor is set up on the first communication path. Then, the encrypted program is transmitted from the program distribution device to the tamper resistant processor through the second communication path.