Anti-quantum computing cloud storage method and system based on alliance chain

Abstract

The invention relates to an anti-quantum computing cloud storage system based on an alliance chain, which is implemented among alliance chain members communicating with each other. The alliance members comprise a User, and a plurality of Endorsers, Orders and Committers for providing corresponding services, and the system is characterized in that each party is configured with a key card, and eachkey card stores a private key, a public key pool and a system management public key; public key units in one-to-one correspondence with the alliance members are stored in the public key pool; a publickey random number is stored in the public key unit, the anti-quantum computing cloud storage method comprises the steps that a file is inquired on the basis of an alliance chain, corresponding file transmission is conducted according to an inquiry result, and file transmission comprises uploading and downloading from a cloud storage server. Distributed generation and secret key storage are carried out through an alliance chain, so that the file storage security is further improved.

Description

technical field [0001] This application relates to the field of consortium chains, in particular to a method and system for anti-quantum computing cloud storage based on consortium chains. Background technique [0002] Blockchain is a brand-new distributed infrastructure and computing paradigm. It uses an ordered chained data structure to store data, uses consensus algorithms to update data, and uses cryptography to ensure data security. In blockchain-based transactions, ensuring the data security of transactions and the privacy of customers is a necessary condition for the further development of blockchain. For this reason, cryptography technology, especially public key cryptography, has been widely used in blockchain. The alliance chain is a branch of the blockchain, so it is also a distributed and decentralized public database. The difference from other chains is that it is aimed at members of specific groups and limited third parties. A pre-selected node is the bookkee...

AI Technical Summary

Problems solved by technology

[0006] 1. There is a certain risk in storing keys on cloud services, and public cloud customers have worries about data on the cloud

[0007] 2. The current cloud storage directly and simply uses the public key cryptosystem, which cannot resist the attack of quantum computing

[0008] 3. In the prior art, the public key pool server is used to store and manage keys in a unified way. There are still two problems in this way

One is that the key management center is vulnerable to attacks and paralyzes the entire cloud storage network

The second is that the key management center has all the keys. If the key management center loses control and illegally decrypts user data, it will cause serious consequences.

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