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. 18, 2015
Filed:
Jun. 10, 2013
Applicant:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Inventors:
Hiroshi Isozaki, Kawasaki, JP;
Hiroyuki Chaki, Ome, JP;
Kazunobu Konda, Tokyo, JP;
Takashi Kokubo, Ome, JP;
Hideki Ohkita, Kunitachi, JP;
Assignee:
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04N 7/167 (2011.01); H04N 21/2347 (2011.01); H04N 21/258 (2011.01); H04N 21/266 (2011.01); H04N 21/4405 (2011.01); H04N 21/4623 (2011.01); H04N 21/4627 (2011.01); H04N 21/6334 (2011.01); H04N 21/658 (2011.01); H04N 21/8355 (2011.01);
U.S. Cl.
CPC ...
H04L 63/0428 (2013.01); H04N 7/1675 (2013.01); H04N 21/2347 (2013.01); H04N 21/25816 (2013.01); H04N 21/25875 (2013.01); H04N 21/26609 (2013.01); H04N 21/26613 (2013.01); H04N 21/4405 (2013.01); H04N 21/4623 (2013.01); H04N 21/4627 (2013.01); H04N 21/63345 (2013.01); H04N 21/6582 (2013.01); H04N 21/8355 (2013.01);
Abstract
According to one embodiment, a transmitting method transmits a start request for an authentication and key exchange from at least one of receivers to the transmitter, performs an authentication and key exchange for at least one of a first key common to the receivers and a second key peculiar to the at least one of the receivers, and encrypts the content by using a key shared by the transmitter and the at least one of the receivers to transmit the encrypted content to the at least one of the receivers.