Inventor

MATSUZAKI NATSUME

JP144 patents

⚠️ This page may combine multiple inventors who share the name “MATSUZAKI NATSUME”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MATSUZAKI NATSUME

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Apparatus and method for preventing unauthorized use of information recorded on an information recording medium

Encryption apparatus for ensuring security in communication between devices

Communication device which performs two-way encryption authentication in challenge response format

Pay information providing system for descrambling information from plural sources and rescrambling the information before sending to a terminal or terminals

Device authentication system which allows the authentication function to be changed

Apparatus and method for data encryption with block selection keys and data encryption keys

Method for generating a public key

Personal authentication method

Data protection system that protects data by encrypting the data

Digital work protection system, key management apparatus, and user apparatus

Device, method, and storage medium for exponentiation and elliptic curve exponentiation

One-way data conversion apparatus and device authentication system

Group formation/management system, group management device, and member device

Authentication system and key registration apparatus

Content duplication management system and networked apparatus

Multi-word arithmetic device for faster computation of cryptosystem calculations

File managing system, file management apparatus, file management method, and program storage medium

Data transmission method, data receiving method, data transmission system and program recording medium

Block cipher using key data merged with an intermediate block generated from a previous block

High-speed modular multiplication apparatus achieved in small circuit

Elliptic curve exponentiation apparatus that can counter differential fault attack, and information security apparatus

Encryption transmission system

Content distribution system

Data distribution system

Information security device, exponentiation device, modular exponentiation device, and elliptic curve exponentiation device

PANASONIC CORP

Home appliance information management apparatus, home appliance information sharing method, and home appliance information sharing system

Information security device

Group admission system and server and client therefor

Information security device

Authenticator apparatus

Information security device and elliptic curve operating device

Copyright protection system, recording device, and reproduction device

Key delivery apparatus, terminal apparatus, recording medium, and key delivery system

Unauthorized connection detecting device, unauthorized connection detecting system, and unauthorized connection detecting method

Shared information distributing device, holding device, certificate authority device, and system

Password recovery system

Health care system, key management server and method for managing key, and encrypting device and method for encrypting vital sign data

Content-duplication management system, apparatus and method, playback apparatus and method, and computer program

Digital work protection system, record/playback device, recording medium device, and model change device

Digital work protection system

Deactivation system

Data use management system, transmitting apparatus having management function, and data use management method

Transmission/reception system

MATSUZAKI NATSUME

Relay device

Server, terminal apparatus, device registering system, registering method, registering program and recording medium

FUTA YUICHI

Generating PUF error correcting code using redundant hardware

MATSUSHITA COMM IND CO LTD

Exclusive key sharing method

PANASONIC IP CORP AMERICA

Method for providing data using fridge&#39;s log information

YOKOTA KAORU

Authentication system, signature creating device, and signature verifying device

MAEDA MANABU

Software updating apparatus, software updating system, invalidation method, and invalidation program

Method for providing data using fridge's log information