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Enciphering and deciphering method and device

An encryption method and a technology for encrypting data, which are applied in the field of communication, can solve problems such as high computational complexity and large amount of calculation, and achieve the effects of small computational complexity, small amount of calculation, and low cost

Inactive Publication Date: 2008-12-03
SHENZHEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the encryption of wireless communication data usually needs to first generate a key of dozens of digits, and then use the key to encrypt the wireless communication data. This encryption method has high computational complexity and a large amount of calculation.

Method used

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  • Enciphering and deciphering method and device
  • Enciphering and deciphering method and device
  • Enciphering and deciphering method and device

Examples

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Embodiment Construction

[0025] figure 1 It is a flow chart of the encryption method of the embodiment of the present invention, with reference to this figure, the method mainly includes:

[0026] 101. Obtain the communication data to be encrypted and random clock data. Specifically, the communication data is the communication data that needs to be sent by the sending end of the communication system, and a random clock data is obtained from the clock. Since the clock time changes, and the clock is generally accurate to Microsecond level, so the randomness of random clock data is good;

[0027] 102. Encrypt the communication data with the random clock data to obtain the encrypted data after the encryption processing. Specifically, the random clock data has the same number of bits as the communication data, and logically separate the random clock data and the communication data to be sent. Or processed to obtain encrypted data with similar randomness to random clock data, and then the random clock data...

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PUM

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Abstract

The invention discloses an encryption method; at first, the communication data and random clock data to be encrypted are obtained, then the communication data is encrypted according to the random clock data to get the enciphered data. In addition, the invention also discloses a corresponding decryption method and a device. The invention can encrypt the communication data with less complexity of computation and smaller calculated amount; also, the encryption method has wide application and low cost.

Description

technical field [0001] The present invention relates to the communication field, in particular to an encryption and decryption method and device. Background technique [0002] In a wireless communication system, wireless communication data is transmitted in the air, and anyone who wants to receive the signal can receive the wireless communication data as long as he uses a wireless signal receiving device in this frequency band. In order to prevent the leakage of wireless communication data, it is necessary to Data is encrypted. [0003] At present, the encryption of wireless communication data usually needs to first generate a key with dozens of bits, and then use the key to encrypt the wireless communication data. This encryption method has high computational complexity and a large amount of calculation. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide an encryption method, a decryption method, an encryption dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/22H04L9/00
Inventor 王根平
Owner SHENZHEN POLYTECHNIC