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:
Aug. 26, 2014
Filed:
Jun. 23, 2010
Naohiro Fukuda, Funabashi, JP;
Naohiro Fukuda, Funabashi, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The encryption key distribution system includes a node A, a node B, and an authentication server S. Upon receiving a first nonce created by the node A and a second nonce created by the node B, the authentication server S creates a session key. The authentication server S sends a first message authentication code value and a first encryption message to the node A. The first encryption message is created by encrypting the first nonce, the session key, and first additional information with a first secret key. The authentication server S sends a second message authentication code value and a second encryption message to the node B. The second encryption message is created by encrypting the second nonce, the session key, and second additional information with a second secret key. The node A decrypts the first encryption message with the first secret key, thereby obtaining the session key and the first additional information. Further, the node A authenticates the session key by use of the first message authentication code value. The node B decrypts the second encryption message with the second secret key, thereby obtaining the session key and the second additional information. Further, the node B authenticates the session key by use of the second message authentication code value.