Block chain secret key recovering method based on multi-party security computing technology, and medium

Abstract

The invention discloses a block chain secret key recovering method based on a multi-party security computing technology, and a medium, for preventing the permission of a core node from being overlarge, allowing the backup and recovery of a private key to be safer, and thus protecting user rights. The technical scheme is as follows: the mandate and recovery of the block chain secret key are performed by using the multi-party security computing technology. A governmental agency with legal validity can be introduced to be networked with a third-party agent for verifying identity validity of the user, so as to effectively verify and endorse the user identity. On the basis of effective endorsing, the user and the secret key management service provider perform security cooperative computing on the private key, so that the private key of the user is backed up and recovered in an encrypted manner. According to the method provided by the invention, the user identity management can be achieved,the permission of the privilege node is minimized, and the user identity is effectively verified through introducing the third-party agent, and thus the requirement of secrete key mandate of the nodeuser is met.

Description

technical field [0001] The present invention relates to block chain technology, in particular to a block chain key recovery method. Background technique [0002] Blockchain technology is the underlying technology of the decentralized distributed ledger technology that originated from Bitcoin. It is a chained data structure that combines data blocks in a sequential manner in chronological order, and uses cryptography to The non-tamperable and non-forgeable way guarantees a decentralized distributed ledger. A node is the basic unit of a blockchain network. Generally, a node corresponds to a computer. As a participant in the blockchain system, each maintains a copy of data and can play different roles, such as sending transactions, verifying transactions, and keeping accounts. . The nodes maintain the consistency of the backup database data through the consensus algorithm. Each account in the blockchain system consists of an address (public key) and a private key. The user ...

AI Technical Summary

Problems solved by technology

However, this method gives too much power to the core node, which cannot meet the needs of customers. The entrusted party can actually completely control the account, and can even perform operations against the entrusting party's wishes.

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