Secure coding method, decoding method and equipment

Abstract

The invention discloses a secure coding method, a decoding method and equipment. The method comprises the following steps: performing, by a first encoder, coding processing in at least one round of encryption operation after at least one round of encryption operation in n rounds of encryption operations and / or in at least one round of encryption operation in the n rounds of encryption operations in the process of performing the n rounds encryption operations on a plaintext by applying an encryption algorithm, wherein the code rate of the first encoder is 1, and n is an integer more than 1; andperforming, by a second encoder, coding processing on the plaintext acquired after the n rounds of encryption operations, thus acquiring a coded result, wherein the code rate of the second encoder ismore than 1. The embodiment of the invention provides a lightweight secure coding scheme, which can combine a lower complexity encryption algorithm and a lower complexity coding algorithm to achievea low complexity secure coding algorithm on the premise of considering the security of the secure coding algorithm, and the low complexity secure coding algorithm is suitable for being applied to a lightweight Internet of things.

Description

technical field [0001] The embodiments of the present application relate to the technical field of communication security, and in particular, to a secure encoding method, decoding method, and equipment. Background technique [0002] Encoding refers to the introduction of redundant data in the transmitted data to avoid data errors during transmission. Encryption refers to changing the original information data with a special algorithm. Under normal circumstances, two steps of encoding and encryption are required to transmit data. In the traditional method, the encoding process and the encryption process are independent. The traditional method has the problems of high complexity and long processing delay. Based on this, the concept of "secure encoding" is proposed, wherein, secure encoding refers to integrating encryption operations into the encoding process, or integrating encoding operations into the encryption process, so as to complete the encryption and encoding operat...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present application provides a secure coding method, a decoding method and a device, which are used to solve the complexity of the security coding algorithm caused by selecting a highly complex algorithm to improve the security of the entire security coding algorithm in the prior art Higher, not suitable for lightweight IoT applications

Images