Block chain privacy protection system and method based on homomorphic encryption

A privacy protection system and homomorphic encryption technology, which is applied in the field of blockchain privacy protection system based on homomorphic encryption, can solve problems such as ineffective and perfect solution to blockchain transaction information security, to ensure transaction legitimacy, The effect of enhancing concurrency and improving efficiency

Inactive Publication Date: 2019-06-04
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] To sum up, none of the current solutions can effectively and comprehensively solve the problem of transaction information security on the blockchain

Method used

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  • Block chain privacy protection system and method based on homomorphic encryption
  • Block chain privacy protection system and method based on homomorphic encryption
  • Block chain privacy protection system and method based on homomorphic encryption

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Experimental program
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Embodiment Construction

[0061] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0062] Such as figure 1 as shown, figure 1 The system model diagram of the blockchain privacy protection system based on homomorphic encryption provided by the present invention;

[0063] Certification center: the certification center is used for identity verification, issuing certificates, and regular checks on the ledger;

[0064] The primary task is to perform authentication, that is, to perform identity verification before the node joins the network. Only after the verification is passed, the node is allowed to join the network, and the node is issued a certificate after the node joins the network; the secondary task is to regularly check the ledger. Prevent illegal transactions.

[0065] Blockchain nodes: the blockchain nodes are used to collect transactions, verify transactions, sort transactions and generate blocks; the blockchain nodes includ...

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PUM

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Abstract

The invention provides a block chain privacy protection system and method based on homomorphic encryption. The privacy protection system comprises an authentication center which is used for carrying out identity verification, issuing a certificate and periodically checking an account book; The block chain nodes are used for collecting transactions, verifying the transactions, sorting the transactions and generating blocks; Wherein the block chain nodes comprise a preprocessing node, a confirmation node and a sorting node; And a user: one user corresponds to one confirmation node. According tothe block chain privacy protection system and method based on homomorphic encryption provided by the invention, the block chain privacy protection scheme can realize transaction information confidentiality; The blockchain privacy protection scheme can ensure that the transaction information cannot be tampered; The blockchain privacy protection scheme can ensure transaction legality; The re-encryption function in the blockchain privacy protection scheme is secure.

Description

technical field [0001] The present invention relates to the technical field of block chain communication, in particular to a block chain privacy protection system and method based on homomorphic encryption. Background technique [0002] As the influence of Bitcoin continues to increase, blockchain technology, which is the underlying core of Bitcoin, has begun to enter people's field of vision. The alliance chain is a new model proposed after the public chain represented by Bitcoin. Compared with the public chain, it can effectively solve the shortcomings of low efficiency in the public chain under the condition of sacrificing certain decentralization. [0003] Nodes in the consortium chain need to be authorized to join, and there is a certain foundation of trust between nodes, which is generally suitable for use in scenarios such as financial transactions between enterprises; there are often commercial secrets in financial transactions between enterprises, and the two partie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q20/38G06Q20/40G06Q20/42G06Q40/04G06F21/62H04L9/00
Inventor 王天阳费书凡
Owner XIDIAN UNIV
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