Block chain industrial data encryption method and device based on national secret and storage medium

Abstract

The invention relates to a block chain industrial data encryption method and device based on national secret and a storage medium, and the method comprises the steps: carrying out the key negotiation through employing a key exchange method based on an elliptic curve, and determining a shared key; negotiating and determining the current shared salt of the current round of data transmission; generating a current round transaction key based on the shared key and the current shared salt; the initiator encrypts the current round of to-be-delivered data by using the current round of transaction key and the SM4 national secret algorithm, and simultaneously uploads the current round of salted encrypted data and the current round of delivery hash value of the current round of to-be-delivered data to the block chain; and progressively increasing the current shared salt to obtain a next round of shared salt, generating a next round of transaction key according to the next round of shared salt and the shared key, and applying the next round of transaction key to a next round of data transmission process of the two communication parties. According to the method, the repudiation resistance, anonymity and integrity of the transaction can be enhanced, the continuous encryption delivery of the data on the block chain is realized, and the key leakage hazard can be reduced.

Description

technical field [0001] The present application relates to the field of information security technology, and in particular to a national secret-based blockchain industrial data encryption method, device and storage medium. Background technique [0002] At present, with the development and popularization of 5G technology, the industrial Internet has been greatly developed. 5G can be used to solve the problem of industrial transmission rate, but for the security nature of the continuous delivery of the industrial Internet, more important Assure. The value of industrial Internet data is high, and the chain reaction after a problem occurs is wide and destructive. [0003] Blockchain technology has inherent advantages in improving multi-party trust. The immutable nature of blockchain makes the data on the blockchain have strong non-repudiation and integrity. However, on the one hand, due to the non-repudiation of the blockchain, data disclosure may occur, so operations such as s...

AI Technical Summary

Problems solved by technology

However, on the one hand, due to the non-repudiation of the blockchain, data disclosure may occur, so it is necessary to combine cryptography to perform operations such as summarization, encryption, and exchange.

On the other hand, a major problem that often exists in sustainable delivery is that if a key is leaked, the subsequent data can also be decrypted. Once the key is leaked, the harm caused is relatively high

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