Consumable chip and its communication method, consumable chip and imaging device communication system and method
A technology of consumable chips and imaging equipment, applied in transmission systems, instruments, computing, etc., can solve problems such as long computing time, cracking, and complicated authentication process, and achieve the effect of solving low authentication efficiency
Active Publication Date: 2020-03-27
HANGZHOU CHIPJET TECH CO LTD
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This invention patent only relies on a serial number for authentication between imaging equipment and consumables. Although a double algorithm is used for verification and comparison authentication, once competitors obtain the serial number, there is still a risk of being cracked, and the authentication process is complicated. Long operation time
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[0202] The initial authentication information includes initial command encrypted data, and the initial command feedback encrypted data is initial encrypted information. An implementation of the initial authentication process specifically includes the following steps:
[0203] Step S31'', before the consumable chip encrypts the initial authentication information, the imaging device encrypts the initial command data to generate the initial command encrypted data;
[0204] Step S32'', after receiving the encrypted data of the first command, the consumable chip decrypts it and restores it to the data of the first command;
[0205] Step S33'', the consumable chip performs command processing according to the initial command data and generates initial command feedback data;
[0206] Step S34'', the consumable chip encrypts the initial command feedback data to generate the initial command feedback encrypted data;
[0207] Step S35'', after receiving the encrypted data of the initial...
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The invention discloses a consumable chip and a communication method thereof, a communication system of the consumable chip and an imaging device and a communication method of the consumable chip andthe imaging device, belonging to the technical field of printer consumables. The communication method of the consumable chip comprises the following steps: encrypting first authentication informationsent by the imaging device to generate first encrypted information, wherein the first authentication information comprises a first serial number, and the first serial number is the one selected from aplurality of serial numbers when the imaging device receives a consumable change signal or a cover opening and closing signal; sending the first encrypted information to the imaging device, and performing first authentication by the imaging device; after the first authentication is successful, encrypting second authentication information sent by the imaging device to generate second encrypted information, wherein the second authentication information comprises a second serial number, and the second serial number different from the first serial number is sent to the consumable chip by the imaging device after authentication of the first serial number is successful; and sending the second encrypted information to the imaging device, and performing second authentication by the imaging device. The consumable chip, the methods and the system provided by the invention have short timeliness and high efficiency, are not liable to be copied by competitors and are safer in authentication.
Description
technical field [0001] The invention relates to the technical field of printer consumables, in particular to a consumable chip and a communication method thereof, a communication system and method between the consumable chip and an imaging device. Background technique [0002] At present, consumables generally use consumable chips as a medium for information and consumption of consumables. The consumable chip and the imaging device are connected through interfaces such as I2C and single wire. During the working process of the imaging device, there is communication between the consumable chip and the imaging device. During the use of consumables, consumable chips and imaging devices need to communicate and authenticate interactively. The serial number of the consumables and its related authentication data are stored in the non-volatile storage unit of the consumable chip. When the consumables are installed in the imaging device, the imaging device will read the serial number...
Claims
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IPC IPC(8): G06F21/71G06F21/60H04L29/06
CPCG06F21/602G06F21/71H04L63/0428H04L63/0876
Inventor 郭伟欣孙云
Owner HANGZHOU CHIPJET TECH CO LTD