Inventor

YU HUAZHANG

CN210 patents

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

YU HUAZHANG

FEITIAN TECHNOLOGIES CO LTD

Key device

Information security device of Universal Serial Bus Human Interface Device class and data transmission method for same

Method for realizing off-line initialization of hardware wallet and equipment thereof

Hardware wallet binding authorization method and apparatus

Method and device for implementing password-free EMV contact transaction

Method for realizing digital currency wallet by using hardware, and hardware wallet

Bluetooth device and working method thereof

Operating method for push authentication system and device

Key device

Key device

Activating mobile terminal token method

Method for identifying audio device

USB device and method thereof for recognizing host operating system

Firmware update method in two-chip solution for secure terminal

Method for realizing bluetooth-binding between smart key device and mobile device

Working method for smart card reader

Method and system for generating and authorizing dynamic password

Method for authenticating an OTP and an instrument therefor

Method for automatically generating and filling in login information and system for the same

Method and apparatus for realizing secure signature

Authentication method and authentication device

Method for integrating authentication device and website, system and apparatus

One-time-password authentication method and device

OTP card

Method and device for authenticating based on authenticating device

Method for concluding electronic contracts and server

Hardware wallet and hardware wallet holder identity verification method

Smart key device and working method thereof

Working method of NFC token

Data writing and reading methods for flash

Miniature electronic device

Method for implementing precomputation of large number in embedded system

Sound transmission-based verification method

Method for safely downloading application

LU ZHOU

Method for protecting software accessible over a network using a key device

Verification method and system thereof

Method for managing the hardware device

Signing method, apparatus, and system

Method for customizing customer identifier

One time password generating method and apparatus

Portable information security device

Method for operating an e-purse

Method and system for upgrading firmware of a card reader

Audio communication based electronic signature system and method thereof

Authentication method and key device

Method for preventing unauthorized access to the computer system by using one-time password

Method for accessing multiple card slots and apparatus for the same

Method for loading double e-wallets

System and method for communication between dynamic token and tool

Device and method for automatic driver installation