Inventor · disambiguated record
Katsuyuki Okeya
Also filed as: OKEYA KATSUYUKI
9 granted patents·7 pending applications·163 citations·filing 1999–2022
88Inventor score
Files withHITACHI LTD6RENESAS ELECTRONICS CORP2VUILLAUME CAMILLE2HITACHI HIGH TECH CORP1OKEYA KATSUYUKI1
Top patents by PatentIndex Score
16 records- 0184US8291229B2System and method for digital signatures and authenticationVUILLAUME CAMILLE·Filed 2008·Granted Oct 16, 2012·33 cites·15 claims
- 0282US7308096B2Elliptic scalar multiplication systemHITACHI LTD·Filed 2002·Granted Dec 11, 2007·42 cites·21 claims
- 0373US7046801B2Method of calculating multiplication by scalars on an elliptic curve and apparatus using same and recording mediumHITACHI LTD·Filed 2001·Granted May 16, 2006·21 cites·22 claims
- 0470US7478432B2Method and system for contents controlHITACHI LTD·Filed 2002·Granted Jan 13, 2009·16 cites·25 claims
- 0565US7904498B2Modular multiplication processing apparatusRENESAS ELECTRONICS CORP·Filed 2006·Granted Mar 8, 2011·3 cites·10 claims
- 0661US6816594B1Elliptic curve generating method and device, elliptic encryption system and recording mediumHITACHI LTD·Filed 1999·Granted Nov 9, 2004·40 cites·15 claims
- 0760US7512231B2Computation method for modular exponentiation operation in decryption or signature generationHITACHI LTD·Filed 2004·Granted Mar 31, 2009·7 cites·8 claims
- 0856US8374345B2Data processing system and data processing methodRENESAS ELECTRONICS CORP·Filed 2009·Granted Feb 12, 2013·1 cites·5 claims
- 0955US2024355478A1Information processing apparatus, clinical diagnosis system, and programHITACHI HIGH TECH CORP·Filed 2022·Application pending·0 cites
- 1047US2009279694A1Privacy-preserving scalar product calculation system, privacy-preserving scalar product calculation method and cryptographic key sharing systemTAKAHASHI KENTA·Filed 2009·Application pending·0 cites
- 1146US8504602B2Modular multiplication processing apparatusYOSHINO MASAYUKI·Filed 2011·Granted Aug 6, 2013·0 cites·10 claims
- 1244US2008240443A1Method and apparatus for securely processing secret dataHITACHI LTD·Filed 2008·Application pending·0 cites
- 1342US2007245147A1Message authentication code generating device, message authentication code verification device, and message authentication systemOKEYA KATSUYUKI·Filed 2007·Application pending·0 cites
- 1440US2008095360A1Signature System and Signature MethodVUILLAUME CAMILLE·Filed 2007·Application pending·0 cites
- 1540US2003059043A1Elliptic curve signature verification method and apparatus and a storage medium for implementing the sameFiled 2002·Application pending·0 cites
- 1639US2003156714A1Elliptic curve scalar multiplication method and device, and storage mediumFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →