Private key threshold backup, loss reporting and recovery system based on alliance chain and method thereof

Abstract

The invention discloses a private key threshold backup, loss reporting and recovery system based on an alliance chain and a method thereof. The private key threshold backup, loss reporting and recovery system comprises an authentication mechanism, a plurality of users and alliance chain members, wherein each user and each alliance chain member are each provided with a secret key card; the secret key cards are issued by the authentication mechanism, and public keys and private keys are stored in the secret key cards; the user secret key cards comprise a main secret key card and a plurality of backup secret key cards, and user private keys are stored in a distributed mode in a secret sharing mode; and each alliance chain member carries a block chain service and the like. The secret key cardsare configured for the client, the alliance chain member and the certification authority respectively, and the private key is stored in the secret key cards and backed up through the block chain, andthe private key protection effect is good, and the private key loss reporting and recovering method is high in safety and rapid in operation, and the problems that in the prior art, private key recovery is poor in safety and the like can be effectively solved.

Description

technical field [0001] The present invention relates to the technical field of secret sharing, in particular to a private key threshold backup, loss report and recovery system and method based on an alliance chain. 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-se...

AI Technical Summary

Problems solved by technology

[0006] 1. The mainstream methods of storage and use of the existing blockchain cannot resist the attacks of Trojan horses or hackers, and none of them consider key retrieval

In case the private key is lost, the corresponding bitcoin or other rights will disappear forever

[0007] 2. The existing method of backing up the private key by means of platform hosting, when the user key is lost, the core node needs to be entrusted to retrieve the private key, which gives the core node too much power and cannot meet customer needs

[0008] 3. The user's blockchain private key can be stored in electronic devices, but once lost or information is stolen, the blockchain private key will be lost, which will have a significant impact on the user's property security

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