Inventor
IZU TETSUYA
JP28 patents
⚠️ This page may combine multiple inventors who share the name “IZU TETSUYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
20 patentsUS9203800B2Dec 1, 2015
Communication method, node, and network system
FUJITSU LTD222 citations99
US8732454B2May 20, 2014
Key setting method, node, and network system
FUJITSU LTD9 citations84
US8719563B2May 6, 2014
Key setting method, node, and network system
FUJITSU LTD8 citations84
US8037312B2Oct 11, 2011
Method and apparatus for digital signature authentication, and computer product
FUJITSU LTD8 citations84
US7900050B2Mar 1, 2011
Digital document management system, digital document management method, and digital document management program
FUJITSU LTD16 citations84
US7639808B2Dec 29, 2009
Elliptic curve cryptosystem apparatus, elliptic curve cryptosystem method, elliptic curve cryptosystem program and computer readable recording medium storing the elliptic curve cryptosystem program
FUJITSU LTD14 citations84
US7536011B2May 19, 2009
Tamper-proof elliptic encryption with private key
FUJITSU LTD15 citations84
US7505587B2Mar 17, 2009
Elliptic curve cryptosystem apparatus, storage medium storing elliptic curve cryptosystem program, and elliptic curve cryptosystem arithmetic method
FUJITSU LTD14 citations84
US9386017B2Jul 5, 2016
Authentication device, system and method
FUJITSU LTD5 citations72
US9319923B2Apr 19, 2016
Node, communication method, and communication system
FUJITSU LTD2 citations63
US9032203B2May 12, 2015
Key setting method, node, server, and network system
FUJITSU LTD2 citations63
US9071420B2Jun 30, 2015
Information processing apparatus, tampering detection apparatus, information processing method, tampering detection method, and computer product
FUJITSU LTD1 citations52
US7970131B2Jun 28, 2011
Elliptic curve cryptosystem apparatus, storage medium storing elliptic curve cryptosystem program, and elliptic curve cryptosystem arithmetic method
FUJITSU LTD0 citations52
US9614822B2Apr 4, 2017
Node device, communication method and network system
FUJITSU LTD1 citations51
US9510216B2Nov 29, 2016
Node device and communication control method
FUJITSU LTD1 citations51
US11451403B2Sep 20, 2022
Verification method, information processing device, and non-transitory computer-readable storage medium for storing verification program
FUJITSU LTD0 citations46
US9712499B2Jul 18, 2017
Method and apparatus for cryptographic processing
FUJITSU LTD0 citations41
US9489501B2Nov 8, 2016
Authentication method, authentication device, and system
FUJITSU LTD0 citations40
US9772819B2Sep 26, 2017
Apparatus and method for generating physical random numbers
FUJITSU LTD0 citations39
US9760717B2Sep 12, 2017
Communication device, system, and control method
FUJITSU LTD0 citations39
IZU TETSUYA
4 patentsUS8533483B2Sep 10, 2013
Data processing apparatus and digital signature method
IZU TETSUYA11 citations83
US8719578B2May 6, 2014
Document verifying apparatus, document verifying method, and computer product
IZU TETSUYA2 citations61
US8391477B2Mar 5, 2013
Cryptographic device having tamper resistance to power analysis attack
IZU TETSUYA4 citations61
US8452973B2May 28, 2013
Digital signature method, program, and apparatus
IZU TETSUYA0 citations40