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High speed password card based on double DSP dual bus structure

A dual bus, password card technology, applied in the field of high-speed password cards, can solve the problems of affecting data input and output, slow speed, etc., and achieve the effects of convenient use, improved speed and performance, and simple structure

Inactive Publication Date: 2008-03-05
Fisherman Information Technology Co Ltd
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] Everyone knows that the security of data is related to the information security and commercial interests of enterprises. More and more enterprises have begun to pay attention to the encryption and decryption of data. The following defects:
[0003] 1. Existing cipher cards generally use a DSP chip to process data
[0004] 2. The data transmission between the DSP and the encryption and decryption chip adopts the same bus, which greatly affects the input and output of data

Method used

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  • High speed password card based on double DSP dual bus structure

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Embodiment Construction

[0012] In Fig. 1, the present invention adopts two digital signal processors DSP1 and DSP2, and DSP1 is responsible for the input of data, and DSP2 is responsible for the output of data, connects physical noise source WNG5 7 on digital signal processor DSP 1, DSP1 collocation independent memory FLASH 8, DSP2 with independent memory FLASH9, DSP1 and DSP2 adopt dual-bus communication with encryption and decryption chip SSX30-A 3, DSP1 and DSP2 also adopt dual-bus communication with the host computer, and dual-port RAM4 is connected between DSP1 and DSP2 , using bridge chip XIO2000A5 to realize the conversion from PCI-Express6 bus to PCI10 and PCI11.

[0013] The physical noise source WNG57 connected with the digital signal processor DSP1 is responsible for generating random numbers as the basis for the encryption algorithm to generate the key; the memory FLASH8 connected with the digital signal processor DSP1 stores the kernel program of the digital signal processor DSP1, and dig...

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Abstract

The high speed cipher card based on two DSP two-bus structure is characterized in that: two digit signal processors (DSP) conduct data processing, one of the processors is connected with a physical noise source WNG5, each processor is matched with a independent FLASH storage, between the two processors and enciphering-deciphering chips adopts two-bus communication, and between the two processors and the main machine also adopts two-bus communication, the connection two-mouth RAM between the two processors adopts bridge-jointing chip to realize the conversion from PCI bus to PCI-Express bus. Advantage: raised input-output speed and property in video-audio media data enciphering-deciphering course, simple structure and convenient for using.

Description

technical field [0001] The invention relates to the field of electronic information, in particular to a high-speed cipher card based on a dual-DSP dual-bus structure, which is used in finance, electronic government affairs, military industry and other industries that require data security. Background technique [0002] Everyone knows that the security of data is related to the information security and commercial interests of enterprises. More and more enterprises have begun to pay attention to the encryption and decryption of data. The following defects: [0003] 1. Existing cipher cards generally use a DSP chip to process data. [0004] 2. The data transmission between the DSP and the encryption and decryption chip adopts the same bus, which greatly affects the input and output of data. Contents of the invention [0005] In order to overcome the deficiencies of the above-mentioned technologies, the present invention provides a high-speed encryption card based on a dual-...

Claims

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Application Information

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IPC IPC(8): G09C1/00
Inventor 郭刚
Owner Fisherman Information Technology Co Ltd
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