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Method for encrypting communication between imaging device and storage chip

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: 2013-10-23
ZHUHAI TIANWEI TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Method for encrypting communication between imaging device and storage chip
  • Method for encrypting communication between imaging device and storage chip
  • Method for encrypting communication between imaging device and storage chip

Examples

Experimental program
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Embodiment

[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 transformation 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 ...

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Abstract

The invention discloses a method for encrypting communication between an imaging device and a storage chip. A control part of the imaging device comprises a data generation unit, P channel conversion rules are stored in a storage part of the storage chip, the same P channel conversion rules are stored in a storage unit correspondingly, and P is an integer which is larger than or equal to one. A channel conversion rule A is generated randomly by the data generation unit; the imaging device sends the channel conversion rule A to the storage chip according to the channel conversion of one of the P channel conversion rules; the storage chip receives the channel conversion rule A according to the channel conversion of the P channel conversion rules, and carries out data communication of the next round by the application of the channel conversion of the channel conversion rule A. When an information source sends data information to an information sink, the information source sends the data information to the information sink according to the channel conversion of the channel conversion rule A, and the information sink receives the data information according to the channel conversion of the channel conversion rule A. By the adoption of the method, communication data can be effectively prevented from being decoded by disassembling.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/82G06F3/12
Inventor 温禄泉
Owner ZHUHAI TIANWEI TECH DEV CO LTD
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