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Method for high-speed safety communication of intelligent card

A smart card, communication technology, applied in the field of digital information transmission

Inactive Publication Date: 2010-11-03
BEIJING WATCH DATA SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in use, it is found that because the communication protocol and command part of the smart card conforming to the ISO7816-3 / 4 standard does not stipulate how to use the CPU inside the smart card to complete the protocol and command for encrypting / decrypting large amounts of data, resulting in Unable to give full play to the real ability of 32-bit or higher-speed smart card chips with USB interface to process data, and limit the speed of data processing directly in the smart card or USBKEY developed based on this chip

Method used

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  • Method for high-speed safety communication of intelligent card
  • Method for high-speed safety communication of intelligent card
  • Method for high-speed safety communication of intelligent card

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Embodiment Construction

[0032] 2. On-chip storage unit

[0033] The electrically erasable read-only memory (EEROM) is 32KB, which is used for data and program storage space, and can be read, erased, and written in a single byte, and can be single-byte or multi-byte up to 64 bytes Erasing and writing, the minimum number of times of erasing and writing is 300,000 times, and the data retention time at room temperature is at least 10 years. In terms of erasing performance, the single-byte writing time is 20 microseconds (us), and the page erasing time is 4 milliseconds (ms ), the EEPROM programming voltage is generated on-chip. FLASH is 128KB, used for storage, function library and device driver storage space, erasing and writing of 128-byte pages, the minimum number of erasing and writing is 20,000 times, the data retention time at room temperature is at least 10 years, and the erasing and writing performance is single byte The write time is 20us, the page erase time is 4ms, and its static memory size ...

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Abstract

The invention relates to a method for realizing high-speed safe communication of intelligent card, wherein said method comprises that: adding data processing control word into communication protocol of intelligent card; when initializing intelligent card, based on the control word, judging if using intelligent card to decrypt / encrypt the data; if is, intelligent card uses itself microprocessor todecrypt / encrypt, and sends processed data to the terminal. The invention can improve the processing ability of intelligent card on much data, with wide application.

Description

technical field [0001] The invention relates to a method for realizing high-speed and safe communication of a smart card, which belongs to the technical field of digital information transmission. Background technique [0002] With the rapid development of computer technology and Internet technology, my country's information network construction has entered a golden period of rapid development. From "government online office-e-government affairs" to "online electronic transactions-e-commerce", information networks have penetrated into people's lives. Every corner of the world is gradually changing people's production and lifestyle. At the same time, computer and network crimes, accompanied by the upsurge of information network construction, are constantly appearing and becoming more and more rampant. In the online banking, there have been many crazy money-raising incidents in which fake websites defraud users of passwords. As a result, people have reached a consensus on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32
Inventor 胡鹏
Owner BEIJING WATCH DATA SYST