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. 12, 2010
Filed:
Oct. 18, 2004
Yuichi Futa, Osaka, JP;
Masato Yamamichi, Ota, JP;
Masami Yamamichi, Legal Representative, Ota, JP;
Satomi Yamamichi, Legal Representative, Ota, JP;
Keiko Yamamichi, Legal Representative, Maebashi, JP;
Motoji Ohmori, Hirakata, JP;
Makoto Tatebayashi, Takarazuka, JP;
Yuichi Futa, Osaka, JP;
Masato Yamamichi, Ota, JP;
Masami Yamamichi, legal representative, Ota, JP;
Satomi Yamamichi, legal representative, Ota, JP;
Keiko Yamamichi, legal representative, Maebashi, JP;
Motoji Ohmori, Hirakata, JP;
Makoto Tatebayashi, Takarazuka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In an encrypted communication system that includes a first and a second device, the first device encrypts a 1st key using a public key of the second device to generate 1st encrypted data, which is then transmitted to the second device, receives 2nd encrypted data from the second device, which is then decrypted using a secret key of the first device to obtain a 2nd key, and generates, based on the 1st and 2nd keys, a 1st encryption key for use in communication with the second device. The second device encrypts a 3rd key using a public key of the first device to generate the 2nd encrypted data, which is then transmitted to the first device, receives the 1st encrypted data, which is then decrypted using a secret key of the second device to obtain a 4th key, and generates, based on the 3rd and 4th keys, a 2nd encryption key for use in communication with the first device. The first and second devices perform encrypted communication using the 1st and 2nd encryption keys.