Secure encoding method, decoding method and device

Abstract

A secure encoding method, decoding method and device. The method includes: during the process of applying an encryption algorithm to perform n rounds of encryption operations on plaintext, after at least one round of encryption operations in the n rounds of encryption operations and / or during at least one round of encryption operations in the n rounds of encryption operations, passing The first encoder performs encoding processing, wherein the code rate of the first encoder is 1, and n is an integer greater than 1; the second encoder performs encoding processing on the ciphertext obtained after the above n rounds of encryption operations to obtain an encoding result , the code rate of the second encoder is greater than 1. The embodiment of the present application provides a lightweight secure coding scheme, which can combine the encryption algorithm with low complexity and the coding algorithm with low complexity under the premise of taking into account the security of the secure coding algorithm to realize a Low-complexity secure coding algorithm, this low-complexity secure coding algorithm is suitable for lightweight IoT applications.

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 device. 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 operation...

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

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