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Block chain key recovery method and device

A key recovery and blockchain technology, applied in the blockchain field, can solve problems such as the inability to retrieve the private key of the account

Active Publication Date: 2020-06-26
INDUSTRIAL AND COMMERCIAL BANK OF CHINA
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] This application provides a blockchain key recovery method and device to at least solve the problem that once the account private key in the blockchain node is lost, it cannot be retrieved

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  • Block chain key recovery method and device
  • Block chain key recovery method and device
  • Block chain key recovery method and device

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Embodiment Construction

[0059] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0060]Based on the problems in the background technology, once the account private key of the transaction node in the blockchain is lost, the resources in the account cannot be transferred or traded. In order to solve this problem, this application proposes a blockchain account private key recovery method and devices. The difference between this method and the existing technology is that this method enables a certain blockchain node to be supported by several ...

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Abstract

The invention provides a blockchain key recovery method and device. The method comprises the steps of generating a backup private key according to a help private key obtained from a first help node; obtaining an account private key ciphertext backed up in the member management node in advance, and decrypting the account private key ciphertext by using the backup private key to obtain a recovered account private key, wherein the first help node is a transaction node in the blockchain. The public and private key addition homomorphic principle of the elliptic curve cryptographic algorithm is utilized, elliptic curve point addition operation is carried out on the help public and private key to generate the backup public and private key pair used for encrypting and decrypting the account private key, and therefore backup and recovery of the account private key are achieved.

Description

technical field [0001] This application belongs to the technical field of blockchain, and in particular, relates to a method and device for recovering a blockchain key. Background technique [0002] An account in the blockchain usually consists of a pair of public key and private key (asymmetric key), where the private key is used to prove and authorize the transaction of resources in the account. Users use the account private key to prove their identity and trade resources in the account. Once the private key is lost, the resources in the account cannot be transferred or traded. Therefore, a method for backing up and restoring the private key of the account is needed. Contents of the invention [0003] The present application provides a blockchain key recovery method and device to at least solve the problem that once the account private key in the blockchain node is lost, it cannot be retrieved. [0004] According to one aspect of the present application, a blockchain k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/27G06F21/60G06F11/14
CPCG06F16/27G06F21/602G06F11/1469
Inventor 冯浩铭庞齐章李海平马爱莲
Owner INDUSTRIAL AND COMMERCIAL BANK OF CHINA
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