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A Privacy Preserving Method Based on Homomorphic Cryptography Commitment and Zero-Knowledge Range Proof

A technology of privacy protection and cryptography, which is applied in the field of blockchain privacy protection of cryptography commitment and zero-knowledge range proof, can solve the problems of destroying data availability, increasing design complexity and security risks, and achieving the effect of privacy protection

Active Publication Date: 2021-06-25
HANGZHOU QULIAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One approach is to encrypt the account balance and transaction amount to achieve privacy protection, but this approach will destroy the availability of data, that is, only the holder of the encryption key can use the data, which is contrary to the distributed design of the blockchain. And increase the complexity of the design and security risks

Method used

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  • A Privacy Preserving Method Based on Homomorphic Cryptography Commitment and Zero-Knowledge Range Proof
  • A Privacy Preserving Method Based on Homomorphic Cryptography Commitment and Zero-Knowledge Range Proof

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Embodiment Construction

[0025] The present invention will be described in detail below according to the accompanying drawings and preferred embodiments, and the purpose and effect of the present invention will become clearer. The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] Such as Figure 1-2 As shown, a blockchain privacy protection method based on homomorphic cryptographic commitment and zero-knowledge range proof, the blockchain includes clients and blockchain nodes, and the client configures cryptographic primitives and related parameters; transaction creation occurs on the client, and the user’s plaintext data is saved, transaction processing occurs on the blockchain node, and the privacy protection object is stored and processed on the blockchain node User ...

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PUM

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Abstract

The invention discloses a blockchain privacy protection method based on homomorphic cryptographic commitment and zero-knowledge scope proof. The method uses cryptographic commitment to hide state data and transactions on the blockchain, and solves the In the public database that is synchronized across the network, the privacy of account and transaction data is not introduced. At the same time, no centralized components are introduced. Without affecting the consensus mechanism and storage structure, the logic of transaction sending and execution can be modified to a minimum, and the transaction can be realized. Protection of user privacy.

Description

technical field [0001] The present invention relates to the technical fields of blockchain technology, cryptographic commitment technology and zero-knowledge proof technology, in particular to a blockchain privacy protection method based on homomorphic cryptographic commitment and zero-knowledge range proof. Background technique [0002] Blockchain technology, blockchain is a new type of decentralized protocol that can safely store digital currency transactions or other data, information cannot be forged and tampered with, and transaction confirmation on the blockchain is shared by all nodes on the blockchain Completed, the consensus algorithm guarantees its consistency. A public ledger is maintained on the blockchain. The public ledger is visible to any node on the storage block, thus ensuring that it cannot be forged and tampered with. [0003] In order to support the business logic of the real world, the storage of the blockchain mostly adopts the account model, that is, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32H04L9/00G06Q20/38G06Q40/04
CPCG06Q20/3825G06Q40/04H04L9/008H04L9/3218H04L9/3247H04L2209/56
Inventor 李伟梁秀波邱炜伟李启雷尹可挺宗志恒
Owner HANGZHOU QULIAN TECH CO LTD