Data cross-blockchain access control method and system in multi-blockchain scene, equipment and terminal

An access control and data access technology, applied in transmission systems, electrical components, etc., can solve the problems of complex implementation, poor performance, and inability to effectively share information on the chain, and achieve the effect of ensuring security.

Active Publication Date: 2021-09-07
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) The centralized exchange method is neither safe nor transparent
[0007] (2) Most of the current decentralized asset transactions can only realize the exchange of different contract assets on the same blockchain, and the decentralized exchange of cross-chain digital assets is still not perfect, and in fact they are still in a state of isolation from each other
[0008] (3) Information exchange is more complicated because it involves data synchronization between chains and corresponding cross-chain calls, so the intercommunication barriers between each blockchain application are extremely high, and information sharing on the chain cannot be effectively carried out
[0009] (4) The blockchain technology itself has problems such as poor performance and insufficient capacity under the single-chain architecture. The single-chain is limited by the balance of decentralization, scalability, and security, and it is difficult to support high transaction throughput and low latency. Business Scenario Application
[0010] (5) As the running time of the blockchain increases, its storage capacity will gradually increase, and the data growth rate will even exceed the upper limit of the capacity of the single-chain storage medium, which greatly limits the healthy development of blockchain technology
[0012] (1) The problem of verification of cross-chain transactions, how to confirm that the block that records the transaction has been confirmed enough, that is, the data consistency problem among the distributed networks in the transaction transaction;

Method used

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  • Data cross-blockchain access control method and system in multi-blockchain scene, equipment and terminal
  • Data cross-blockchain access control method and system in multi-blockchain scene, equipment and terminal
  • Data cross-blockchain access control method and system in multi-blockchain scene, equipment and terminal

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Embodiment 1

[0094] The data cross-chain access control system provided by the embodiment of the present invention includes:

[0095] The user module, which is composed of user entities, is the actual participant of data calls, and is used for user identity registration, accessing data and uploading data.

[0096] A multi-chain autonomous module composed of multiple autonomous domains (domain, D) is responsible for user identity registration and attribute issuance, as well as key generation and distribution for attribute encryption, and records data information at the same time. Each domain has its own independently maintained data Information chain and access record chain.

[0097] The data storage module is composed of a cloud service provider (cloud service provider, CSP) and other IoT devices with powerful computing power and large storage capacity, responsible for data storage and download services.

[0098] The user module provided by the embodiment of the present invention includes a...

Embodiment 2

[0104] like Figure 5 As shown, a schematic diagram of cross-domain attribute mapping of the data cross-chain access control method provided by the embodiment of the present invention. In this model, ciphertext policy-based attribute-based encryption CP-ABE is used in each domain for data access control. The resource attributes of each domain are divided into general attributes and mapping attributes. The general attributes represent universal attributes in each domain, such as Name, gender, age, etc.; the mapped attribute represents a local attribute that is only applicable to this domain and requires attribute mapping when calling across domains. When accessing data across chains, the chain where the data resides completes the policy attribute mapping through the relay chain. When a user in any of the autonomous domains D1 sends a cross-chain access request to the autonomous domain D2, the attributes in the autonomous domain D2 can be mapped to the domain D1 through the rel...

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Abstract

The invention belongs to the technical field of data access control, and discloses a data cross-blockchain access control method and system in a multi-blockchain scene, equipment and a terminal. The data cross-blockchain access control method in the multi-blockchain scene comprises a registration stage, data uploading, data uploading, data access, access record uploading and data acquisition. According to the method, the data cross-blockchain access control requirement in a multi-blockchain scene can be met, and a cross-blockchain access control scheme is provided for solving the insufficient performance and capacity of a blockchain technology in a single-blockchain architecture and the problem that a traditional technology cannot meet or realize asset exchange and information exchange requirements of a complex cross-blockchain service. According to the method, asset exchange, data sharing and contract calling among heterogeneous blockchains in a multi-blockchain scene are allowed; the architecture can be flexibly organized and deployed according to scene guidance, and the method has core function characteristics of a general cross-blockchain transmission protocol and a heterogeneous transaction verification engine, and provides reliable underlying technical support for service blockchain service security management and blockchain Internet formation.

Description

technical field [0001] The invention belongs to the technical field of data access control, and in particular relates to a data cross-chain access control method, system, device and terminal in a multi-chain scenario. Background technique [0002] At present, the current blockchain applications and underlying technology platforms are in a state of blooming, but each chain in mainstream blockchain applications is still mostly an independent, vertical closed system. In commercial application scenarios with increasingly complex business forms, there is a lack of a unified interconnection mechanism between chains, which greatly limits the liquidity of digital asset values ​​on the blockchain, and the demand for cross-chain arises from this. [0003] Cross-chain refers to the realization of trusted interoperability of different ledgers by connecting relatively independent blockchain systems. Cross-chain can be roughly divided into digital asset exchange and information exchange ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L63/0435H04L63/102
Inventor 董学文张志为刘森鹏崔志浩沈玉龙王建东祝幸辉宋阳子习宁
Owner XIDIAN UNIV
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