Imaging equipment and memory chip communication encryption method
A technology of storage chips and imaging equipment, applied in the protection of internal/peripheral computer components, digital output to printing units, etc., can solve problems such as easy to be cracked by others, improper acquisition of data information, etc.
Inactive Publication Date: 2017-07-21
ZHUHAI TIANWEI TECH DEV CO LTD
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Problems solved by technology
However, the above method is realized by encrypting and decrypting the communication data information, which is often easily deciphered by others, resulting in the improper acquisition of the communication data information
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[0024] The structure of the memory chip of this embodiment is similar to the structure of the existing memory chip 13, the difference lies in the composition of the memory unit, see Figure 4 In this example, the storage unit of the memory chip stores: a data encryption algorithm, a data decryption algorithm, and two channel conversion rules. The storage part of the laser printer correspondingly stores: the same data encryption algorithm, the same data decryption algorithm and more than one same channel conversion rule, the control part of the laser printer is provided with an encryption and decryption control module for data communication with the memory chip and Data generation unit, the data generation unit is used to randomly generate the data sequence of the communication signal line transformation rules, the data generation unit can be realized by hardware, such as a data generator, or by software design: the module designed for data generation function is integrated into...
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The present invention provides a communication encryption method between an imaging device and a storage chip. The control part of the imaging device includes a data generation unit, P channel conversion rules are stored in the storage part of the storage chip, and the same P channels are correspondingly stored in the storage unit. Transformation rules, P is an integer greater than or equal to 1; the data generation unit randomly generates a channel transformation rule A, and the imaging device sends the channel transformation rule A to the memory chip according to the channel transformation of one of the P channel transformation rules, and the memory chip According to the channel conversion of P channel conversion rules, the channel conversion rule A is received, and the channel conversion of channel conversion rule A is applied to carry out the next round of data communication; when the source sends data information to the sink, the source sends the data information according to the channel The channel conversion of the conversion rule A is sent to the sink, and the sink receives the data information according to the channel conversion of the channel conversion rule A; the adoption of the present invention can effectively prevent the communication data from being disassembled and cracked.
Description
technical field [0001] The invention relates to an encryption method for communication between an imaging device and a storage chip, in particular to a method for encrypting communication information between the imaging device and the storage chip. Background technique [0002] The imaging equipment mentioned in the present invention refers to equipment that converts electrical signals such as characters and patterns into visible images on paper and other media, such as inkjet or laser printers, copiers, fax machines and multifunctional machines. [0003] In the field of communication, the sending party is called "source", the path through which command data passes is called "channel", and the receiving party is called "sink". In communication, the "channel" for communication between the imaging device and the memory chip includes: communication protocol and communication signal line; among them, the communication protocol generally adopts the SPI protocol or the IIC protoco...
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IPC IPC(8): G06F21/82G06F3/12
Inventor 温禄泉
Owner ZHUHAI TIANWEI TECH DEV CO LTD