On-chain digital asset management method and device

A technology of digital assets and management methods, applied in data processing applications, instruments, payment systems, etc., can solve problems such as key loss, digital asset loss, invalidation, etc., to maintain security, ensure security, and save storage and computing. The effect of resources

Active Publication Date: 2020-12-25
ZHENGZHOU XINDA JIEAN INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The application of multi-signature technology based on blockchain solves the problem of asset transactions jointly owned by multiple parties, but there are still some problems: since the key of the digital asset is actually composed of multi-signature keys of multiple households, once the digital asset is generated, the digital asset’s The key (that is, the multi-signature key of the asset) has been formed; since the multi-signature key is stored on the client, it is very easy to cause the key to be lost, and once the key is lost (such as the loss of a person's private key), it will cause the loss of digital assets or Ineffective and other serious consequences

Method used

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  • On-chain digital asset management method and device

Examples

Experimental program
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Embodiment 1

[0036] The present invention proposes an on-chain digital asset management method, which is applied to a digital wallet management system, and the digital wallet management system includes a security server and multiple client devices. Among them, the security server is implemented based on blockchain technology and can host multiple digital wallets. Users under the chain can log in to the security server through the client device to manage their own digital wallets. The communication method between the security server and the client device can be Wired or wireless, the present invention does not limit; for each digital wallet, multiple users can log in to the security server through multiple client devices to jointly participate in the management of the digital wallet.

[0037] Such as figure 1 As shown, a chain digital asset management method proposed by the present invention includes the following steps:

[0038] The security server hosts the user's digital wallet and wall...

Embodiment 2

[0071] Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is: when the private key component of a certain client device is lost, execute:

[0072] A client device generates a private key loss message, and sends the private key loss message to the security server;

[0073] The security server judges whether the identity of the user who sent the private key loss message has passed the verification and has the second operation authentication; after the corresponding user identity has passed the verification and has the second operation authentication, the security server passes the private key. The signature user identifier i corresponding to the user identity in the key loss message finds the corresponding policy information ID;

[0074] After the security server extracts the identity of the target user who manages the asset transaction behavior through the policy information ID, determines the target client device, and forwards the private key ...

Embodiment 3

[0080] The difference between this embodiment and the above-mentioned embodiments is that when the identity of the user who manages asset transaction behavior changes, execute:

[0081] A client device generates a multi-signature user change message, uses its own private key component PK(key)i, aggregation public key P, and member key MKi to sign the multi-signature user change message, and obtains the multi-signature user change message. message signature, and send the multi-signature user change message and its signature to the security server; wherein, the multi-signature user change message includes a multi-signature user addition message or a multi-signature user deletion message;

[0082] The security server judges whether the identity of the user who sent the multi-signed user change message has passed the verification and has the third operation authentication; after the corresponding user identity has passed the verification and has the third operation authentication, ...

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Abstract

The invention provides an on-chain digital asset management method and device. A security server hosts a digital wallet of a user and a wallet private key used for carrying out digital wallet transaction; the security server acquires policy information, reads user identities associated with the policy information and used for managing asset transaction behaviors, generates a multi-signature key negotiation instruction, and issues the multi-signature key negotiation instruction to client devices corresponding to the user identities; the client device receives the multi-signature key negotiationinstruction, generates a public key component P (key) i and a private key component PK (key) i of the multi-signature key negotiation instruction, and uploads the public key component P (key) i to the security server; the security server collects a public key component returned by each client device, and binds all user identities for managing asset transaction behaviors, the corresponding publickey component P (key) i and the strategy information ID; according to the invention, the digital assets and the secret keys thereof are stored in the security service so that the secret keys of the digital assets are not leaked.

Description

technical field [0001] The present invention relates to the technical field of block chain finance, in particular to a method and device for managing digital assets on the chain. Background technique [0002] It has been 10 years since Bitcoin was launched in 2009. Digital assets (digital currencies, digital transactions, and any blockchain-based value symbols) have gradually become an asset form accepted by the public from the earliest anonymous experiments of a small group of geeks. [0003] In actual use, each digital currency wallet has its own algorithm. At present, the signatures widely used in digital currency are almost all ECDSA algorithms, but the underlying elliptic curves are different. In the ECDSA signature scheme, there is no scalability for signatures. In other words, if there are two signatures, their respective public keys must be used to verify the validity of their respective signatures, and there is no way to verify whether both signatures are correct ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q20/06G06Q20/36G06Q20/38
CPCG06Q20/065G06Q20/367G06Q20/3823
Inventor 佘鹏飞王超刘涛冀博王平雷宇龙
Owner ZHENGZHOU XINDA JIEAN INFORMATION TECH
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