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Coding method and device and decoding method and device

A coding method and coding technology, which are applied to the application of error detection coding with multiple parity bits, encryption devices with shift registers/memory, error correction/detection using block codes, etc., can solve the problem that coding technology cannot achieve Information theory, meaning security and other issues, to achieve the effect of safe coding and decoding

Inactive Publication Date: 2017-10-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides an encoding method and device, and a decoding method and device to at least solve the problem that the encoding technology in the related art cannot achieve the security of the information theory meaning

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  • Coding method and device and decoding method and device
  • Coding method and device and decoding method and device
  • Coding method and device and decoding method and device

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Embodiment Construction

[0047] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0048] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.

[0049] In this embodiment, an encoding method is provided, figure 1 is a flowchart of an encoding method according to an embodiment of the present invention, such as figure 1 As shown, the process includes the following steps:

[0050] Step S102, obtaining a message to be sent, wherein the message to be sent includes: a real message of k bits, a random message of (1-k) bits, wherein l and k are both natural numbers;

[0051] Step S104, encrypting th...

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Abstract

The invention provides a coding method and device and a decoding method and device. The coding method comprises the steps of obtaining a message to be sent, the message to be sent comprises a real message of k bits and a random message of (l-k) bits, and l and k are natural numbers; encrypting the message to be sent by using a preset key; coding the encrypted message to be sent according to a check matrix H, and acquiring a codeword r<n+k>, wherein n is the codeword length of the real message, and the check matrix H satisfies the following condition: r<n+k>H<T>=0; and sending the codeword r<n+k>. The technical scheme solves a problem that coding technologies cannot achieve the security in the sense of information theory and realizes safe coding and decoding.

Description

technical field [0001] The present invention relates to the communication field, in particular, to an encoding method and device, and a decoding method and device. Background technique [0002] In related technologies, the research on physical layer security originates from a famous article titled "Eavesdropping Channels" by Wyner. In this article, Wyner systematically expounded the compromise relationship between the reliability and security of the communication system, and described the security capacity of the communication system, and gave the mathematical solution of the security capacity. Here, the security capacity refers to the maximum value of information transmission efficiency under the condition that the eavesdropper's doubt degree is guaranteed to be maximum. In the existence proof of security capacity, Wyner proposed the encoding technique of random binning. In the channel model considering security, random binning coding technique has become one of the most ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L9/06
CPCH04L1/0057H04L9/06H03M13/11H04L1/00
Inventor 胡婧婷
Owner ZTE CORP