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Permission block chain privacy protection and supervision method based on group signatures

A technology of privacy protection and block chain, which is applied in the field of privacy protection and supervision of permissioned block chain based on group signature, which can solve the problems of inability to carry out supervision, leakage of block chain privacy, and inability to know, etc., and achieve good anonymity and identity Information privacy protection, the effect of protecting personal privacy

Inactive Publication Date: 2019-04-16
GUANGXI NORMAL UNIV
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AI Technical Summary

Problems solved by technology

[0003] However, since the current blockchain technology is not yet fully mature, there are still many problems: on the one hand, the current blockchain still has a very serious privacy leakage problem
(2) Overall ledger
Therefore, the regulatory authorities cannot know who is participating in blockchain activities, and supervision cannot be carried out

Method used

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  • Permission block chain privacy protection and supervision method based on group signatures
  • Permission block chain privacy protection and supervision method based on group signatures
  • Permission block chain privacy protection and supervision method based on group signatures

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific examples and with reference to the accompanying drawings.

[0027] Such as figure 1 , assuming that there are n nodes in a licensed blockchain, these nodes include regulatory nodes, endorsement nodes, ordering nodes, master nodes, bookkeeping nodes, and ordinary nodes, among which ordinary nodes and endorsement nodes, ordering nodes, Master nodes and accounting nodes can be converted to each other. Supervisory nodes are responsible for group signatures for ordinary nodes and supervision of the blockchain; endorsement nodes are responsible for endorsement verification of transactions; ordering nodes are responsible for collecting transactions and packaging transactions into blocks; bookkeeping nodes and master nodes follow a certain consensus algorithm Add the block to the blockchain...

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Abstract

The invention discloses a permission block chain privacy protection and supervision method based on group signatures. In a transaction process, whether the endorsement verification of the endorsementnode, the sequencing service of the sequencing node and the consensus process of the main node and the accounting node can only verify the legality of the identities of the two parties of the transaction, and cannot correspond the signature to the real identity of the user, so that the identity privacy of the user is guaranteed. After the transaction is completed, the supervision department can synchronize the block with other nodes through the supervision node, then open the signature contained in the transaction, and enable the signature to correspond to the real identity of the transactionuser, so as to supervise the block chain.

Description

technical field [0001] The invention relates to the technical field of block chains, in particular to a method for privacy protection and supervision of permissioned block chains based on group signatures. Background technique [0002] Blockchain, as the underlying technology of Bitcoin, has set off a wave of research in recent years. In essence, the blockchain is a decentralized database. Due to its tamper-proof, good openness, and autonomy and anonymity, it is completely different from the current social model. It is widely sought after by people and is even known as "The Fourth Industrial Revolution". The blockchain solves the trust problem in the current society, and uses certain cryptography technology and consensus mechanism to solve the problem of completing fair and credible operations in an untrustworthy environment. [0003] However, since the current blockchain technology is not yet fully mature, there are still many problems: on the one hand, the current blockc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q40/04G06F21/62
CPCG06F21/6245G06Q40/04G06F2221/2107
Inventor 刘鹏李春培李先贤
Owner GUANGXI NORMAL UNIV
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