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:
Jan. 11, 2005
Filed:
Nov. 24, 1999
Akito Niwa, Yokohama, JP;
Shinichi Kawamura, Kodaira, JP;
Megumi Aoki, Inagi, JP;
Toshiaki Saisho, Tokyo, JP;
Tatsuya Ishihara, Yokohama, JP;
Fumihiko Sano, Fuchu, JP;
Satomi Hori, Yokohama, JP;
Akito Niwa, Yokohama, JP;
Shinichi Kawamura, Kodaira, JP;
Megumi Aoki, Inagi, JP;
Toshiaki Saisho, Tokyo, JP;
Tatsuya Ishihara, Yokohama, JP;
Fumihiko Sano, Fuchu, JP;
Satomi Hori, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In an encryption apparatus for encrypting a data body to contain an encrypted data body in transmission data and transmitting the transmission data to a receiver, the transmission data includes sender's key recovery data obtained by encrypting recovery information for recovering a key for decrypting the encrypted data body to allow a key recovery agent registered by a sender to decrypt the recovery information, and receiver's key recovery data obtained by encrypting the recovery information for recovering the key for decrypting the encrypted data body to allow a key recovery agent registered by a receiver to decrypt the recovery information.