Cryptographic processing device and cryptographic processing method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9794068
APP PUB NO 20160197726A1
SERIAL NO

14869470

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Abstract

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A memory stores therein a first vector. A processor generates a first encrypted polynomial by encrypting a first polynomial that corresponds to a first binary vector obtained by performing a binary transformation on elements of the first vector. A transmitter transmits to a cryptographic operation device cryptographic information that represents the first encrypted polynomial. The cryptographic operation device multiplies the first encrypted polynomial by a second encrypted polynomial that is generated by encrypting a second polynomial that corresponds to a second binary vector obtained by performing a binary transformation on elements of a second vector, so as to generate a third encrypted polynomial. When assigning 2 to a variable in a prescribed portion of a third polynomial obtained by decrypting the third encrypted polynomial, a result of an operation of the first vector and the second vector is obtained.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FUJITSU LIMITEDKAWASAKI18047

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2006/0245,587 System and method for private information matching 13 2005
 
KABUSHIKI KAISHA TOSHIBA (2)
* 2007/0110,232 ENCRYPTION APPARATUS, DECRYPTION APPARATUS, AND METHOD 2 2006
* 9413729 Symmetric encryption apparatus and storage medium, and symmetric decryption apparatus and storage medium 1 2014
 
FUJITSU LIMITED (1)
2014/0185,794 ENCRYPTION PROCESSING APPARATUS AND METHOD 4 2013
 
DENSO IT LABORATORY, INC. (1)
2012/0219,212 FEATURE CONVERSION DEVICE, SIMILAR INFORMATION SEARCH APPARATUS PROVIDED THEREWITH, CODING PARAMETER GENERATION METHOD, AND COMPUTER PROGRAM 1 2012
 
OLYMPUS OPTICAL CO., LTD. (1)
6219682 Vector normalizing apparatus 3 1998
 
SALDAMLI, GOKAY (1)
* 9436835 Homomorphic encryption in computing systems and environments 1 2013
 
INGRAM MICRO INC. (1)
* 8925075 Method for protecting data used in cloud computing with homomorphic encryption 13 2012
* Cited By Examiner

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