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Self-access encryption and decryption circuit applied to short distance transmission

A self-access, encryption and decryption technology, used in electrical components, wireless communications, security devices, etc., can solve problems such as reducing transmission efficiency, and achieve the effect of eliminating software programs and speeding up data processing.

Inactive Publication Date: 2013-10-02
东南大学无锡分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a process not only requires additional software overhead, but also in the case of continuous transmission, since the AES module can only encrypt and decrypt a set of 128-bit data at a time, the transmission efficiency will be reduced

Method used

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  • Self-access encryption and decryption circuit applied to short distance transmission
  • Self-access encryption and decryption circuit applied to short distance transmission
  • Self-access encryption and decryption circuit applied to short distance transmission

Examples

Experimental program
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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] The internal structure of the MAC controller of the ZigBee communication system is as follows: figure 1 As shown, you can see the position of the self-access encryption and decryption circuit in the MAC layer controller. The external interface is used to control the registers and control signals. The sending FIFO stores the pre-sent original frames, and the receiving FIFO stores the frames received by the receiver. The sending link completes the function of the transmitter, and the receiving link completes receiving The function of the computer, and the self-access encryption and decryption circuit completes the encryption during the sending process or the decryption function during the receiving process.

[0030] This case provides a self-access encryption and decryption circuit applied to short-distance transmission such as figure 2 As shown, it includes an...

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PUM

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Abstract

The invention discloses a self-access encryption and decryption circuit applied to short distance transmission, which comprises an encryption unit and a decryption unit, wherein the encryption unit comprises an encryption interface, an encryption module and an encryption FIFO (First Input First Output), and the decryption unit comprises a decryption interface, a decryption module and a decryption FIFO. With the adoption of the self-access encryption and decryption circuit applied to the short distance transmission, payload data can be extracted from an external FIFO automatically when a ZigBee transmitter or a receiver performs data transmission, and a data flow in an encryption and decryption format can be formed; the data flow is subjected to encryption and decryption automatically according to the length of a payload, and automatically stored in the encryption FIFO or the decryption FIFO according to the 32-bit width after the encryption and the decryption; a whole flow path can be supported by hardware; a software program is saved; and data processing during a ZigBee transmission course is accelerated.

Description

technical field [0001] The invention belongs to the field of wireless communication systems, relates to a digital circuit system and an advanced encryption standard, specifically relates to the encryption and decryption of the 128-bit advanced encryption standard in ZigBee transmission, and is an encryption and decryption circuit applied to ZigBee transmission and a processing method thereof. Background technique [0002] In short-distance wireless communication networks, the demand for low cost and low power consumption has always been a focus of attention. ZigBee technology is a short-range, low-complexity two-way wireless communication technology, mainly suitable for automatic control and remote control fields, can be embedded in various devices, and supports geographic positioning functions. [0003] As a new wireless connection standard, ZigBee can work in three frequency bands of 2.4GHz (popular in the world), 868MHz (popular in Europe) and 915MHz (popular in the Unite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/02
Inventor 李红王陈浩吴建辉张萌刘昊彭茜茜
Owner 东南大学无锡分校