The invention discloses an official seal fake detection method and device based on a network digital
certificate and network lookup. The device comprises an official seal printer connected with an official seal fake detection
system. A
central processing unit MCU in the official seal printer is connected with a communication
assembly, a displayer, a printing
assembly, a storage and a
USB interface. A
power module supplies power to the official seal printer. The official seal fake detection method comprises the steps that the official seal fake detection
system is built for user inspection, the digital
certificate is issued when a user passes identity
authentication, the official seal printer prompts selection of official seal types, a
USB intelligent card is plugged into the
USB interface of the official seal printer, copies needing to be stamped, the user name and a
password are input, the identity and validity of the digital
certificate are verified, fake detection codes are generated in the official seal fake detection
system randomly, the official seal printer displays an official seal pattern, the user selects the position of a two-dimension code, and the official seal printer prints an official seal. By means of the method, whether the official seal is true or false can be queried whenever and wherever, the official seal can be verified and queried whenever and wherever through
mobile phone APPs, and hazards caused when false official seals or copied official seals are used are completely eradicated.