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Method and equipment for carrying out safety communication between USB device and host

A technology for secure communication and host, applied in the field of data communication, can solve problems such as hidden dangers, and achieve the effect of simple equipment, convenient use, and increased difficulty

Active Publication Date: 2007-02-21
FEITIAN TECHNOLOGIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of potential safety hazards in data communication between USB devices and hosts in the prior art, the present invention provides a method and device for secure communication between USB devices and hosts

Method used

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  • Method and equipment for carrying out safety communication between USB device and host
  • Method and equipment for carrying out safety communication between USB device and host
  • Method and equipment for carrying out safety communication between USB device and host

Examples

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Embodiment 1

[0043] The encryption / decryption key can be a fixed key or a dynamic key. If it is a fixed key, the fixed key is directly used for data communication. see figure 1 , the dynamic key generation process is as follows:

[0044] Step 101: Plug the USB device into the host.

[0045] The encryption / decryption key is generated when the connection between the USB device and the host is established, or during the communication process between the USB device and the host. In this embodiment, it is performed when the connection between the USB device and the host is just established.

[0046] Step 102: The host sends a command to obtain the encryption / decryption key.

[0047] If a symmetric algorithm is used, the encryption key and the decryption key are the same; if an asymmetric algorithm is used, the encryption key and the decryption key are public-private key pairs, which are different.

[0048] Step 103: the USB device generates an encryption / decryption key after receiving the ...

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Abstract

A method for carrying out safe communication between USB device and host includes enciphering data then sending enciphered data to USB device by host, carrying out deciphering and processing treatment on received-enciphered data by USB device then enciphering processed data and sending enciphered-processed data to host, deciphering data processed by USB device when enciphered-processed data is received by host. The device for realizing said method is also disclosed.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a method and a device for improving the safe communication of data in a USB device with a host. Background technique [0002] USB: Universal Serial Bus, Universal Serial Bus, its interface is a new standard of serial interface, its main advantages are fast speed, low power consumption, support for Plug & Play, and easy installation. [0003] With the rapid development of computer technology and information storage technology, USB devices have become an indispensable device for people's daily life, office and study. More and more users are accustomed to storing a large number of files in the USB device, through which the files can be easily transferred. This improvement will undoubtedly bring convenience to people, but it also brings security issues—many The information inside the USB device is confidential, and it is easy to be intercepted at will during its interaction with th...

Claims

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Application Information

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IPC IPC(8): G06F21/00G06F21/85
Inventor 陆舟于华章
Owner FEITIAN TECHNOLOGIES
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