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
CN109840771AInactive Publication Date: 2019-06-04XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2019-06-04
Estimated Expiration
Not applicable · inactive patent

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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.
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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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