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Supervisable privacy protection cross-block chain system based on CP-ABE

A CP-ABE and privacy protection technology, applied in the blockchain field, can solve problems such as difficult supervision of regulator data, complex data on the chain, and difficulty in realizing cross-chain business privacy protection, so as to achieve supervision, easy supervision, avoid Inconvenient effect

Active Publication Date: 2021-11-02
中债金科信息技术有限公司 +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Due to the above-mentioned cross-chain method, all users on the receiving chain can obtain the information in the cross-chain business, so it is difficult to achieve user-level privacy protection for cross-chain business, and, due to the huge and complex data on the chain, the regulators are concerned about Data is difficult to monitor

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  • Supervisable privacy protection cross-block chain system based on CP-ABE
  • Supervisable privacy protection cross-block chain system based on CP-ABE
  • Supervisable privacy protection cross-block chain system based on CP-ABE

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Embodiment Construction

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. 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.

[0037] It should be noted that the terms "include" and "have" and any variations thereof in the embodiments of the present invention and the drawings are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally further includes For other steps or units inhe...

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Abstract

The embodiment of the invention discloses a supervisible privacy protection cross-block chain system based on CP-ABE. The system comprises an initiating chain, an initiating chain route, a relay chain, a receiving chain route and a receiving chain. The initiating chain encrypts a to-be-cross-chain transaction through a preset cross-chain smart contract function supporting CP-ABE to obtain a cross-chain transaction, so that the cross-chain transaction has privacy in a cross-chain transmission process, and the relay chain generates a key and sends the key to a target user in the receiving chain. The receiving chain judges whether the target user successfully decrypts the format-converted cross-chain transaction through the key, and if so, the target user obtains the decrypted cross-chain transaction. Therefore, not all users on the receiving chain can obtain the cross-chain transaction, but only the cross-chain transaction after the format conversion is successfully decrypted can obtain the cross-chain transaction, user-level privacy protection on the cross-chain business is realized, inconvenience brought by multiple times of encryption is avoided, a supervisor participates in the relay chain in a simple manner, hierarchical data visibility is achieved, and the actual service scene is met.

Description

technical field [0001] The present invention relates to the field of block chain technology, in particular, to a CP-ABE-based privacy protection cross-block chain system that can be supervised. Background technique [0002] At present, cross-chain business can be carried out between various blockchains, and the main existing cross-chain mode is the relay chain mode. [0003] The cross-chain method of the existing relay chain is: the originating chain initiates cross-chain business, and the initiating chain route obtains the information in the cross-chain business, such as cross-chain transactions and sends them to the relay chain, and the relay chain collects and stores data, receives The chain router reads the information in the cross-chain business, verifies it by itself and sends it to the receiving chain. [0004] Due to the above-mentioned cross-chain method, all users on the receiving chain can obtain the information in the cross-chain business, so it is difficult to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L29/06H04L29/08G06Q40/04
CPCH04L9/3247H04L67/1059H04L63/0428G06Q40/04H04L67/565H04L9/50
Inventor 戴晓卢光宏周国浩丁旋赵曦滨唐华云李荣
Owner 中债金科信息技术有限公司
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