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. 26, 2016
Filed:
Oct. 18, 2013
Fuji Xerox Co., Ltd., Minato-ku, Tokyo, JP;
Koji Suzuki, Kanagawa, JP;
FUJI XEROX CO., LTD., Tokyo, JP;
Abstract
An information providing system includes first and second apparatuses. The first apparatus includes a memory storing a shared random number Rand shared information, a providing unit providing the second apparatus with encrypted information e(K, F) obtained by encrypting information Fwith an encryption key and an encrypted key Yobtained by encrypting a decryption key Kwith the random number R, and an updating unit updating Rto Rbased on the shared information. The second apparatus includes a memory storing the random number Rand the shared information, an acquiring unit acquiring the encrypted information e(K, F) and the encrypted key Y, a key decrypting unit decrypting the encrypted key Ywith the random number Rto calculate the decryption key Kand updating Rto Rbased on the shared information, and an information decrypting unit decrypting the encrypted information e(K, F) with the decryption key K.