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Conditional receipt storage method and node combining code labeling and event types

A technology of event type and receipt, applied in the field of blockchain, can solve the problems of little consideration of privacy performance, high complexity, poor versatility, etc.

Active Publication Date: 2019-09-20
ADVANCED NEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the two biggest challenges in the technology of enterprise-level blockchain platforms are privacy and performance, and it is often difficult to solve these two challenges at the same time
Most solutions trade for privacy by losing performance, or pursue performance without much consideration for privacy
Common encryption technologies to solve privacy problems, such as Homomorphic encryption and zero-knowledge proof, have high complexity, poor versatility, and may cause serious performance loss

Method used

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  • Conditional receipt storage method and node combining code labeling and event types
  • Conditional receipt storage method and node combining code labeling and event types
  • Conditional receipt storage method and node combining code labeling and event types

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0047]

[0048] In the code of the smart contract based on the Solidity language, one or more objects can be marked by exposing the identifier, so that the receipt content corresponding to this part of the object in the receipt data is allowed to be stored in plain text (need to further combine event functions and The dimensions of the preset conditions are used to determine whether to actually store in plaintext), while the rest of the receipt content should be stored in ciphertext. Similarly, in the code of smart contracts written based on Serpent, LLL language, etc., one or more objects can also be marked by exposing identifiers, so as to realize the plain text storage of relevant receipt content.

[0049] The exposure identifier may be a receipt field dedicated to indicate that plaintext storage is allowed, for example, the keyword plain may be used to represent the exposure identifier. Then, for the receipt content that is expected to be stored in plain text, plain can...

example 2

[0051]

[0052] In the above code example 2, by adding the exposure identifier plain at the front of the code of the smart contract, after the code of the smart contract is executed, all fields in the generated receipt data are allowed to be stored in plain text.

[0053] Of course, in other embodiments, the fields that need to be stored in plain text may also be specified. For example, when the From field is marked by an exposed identifier, after the code of the smart contract is executed, the receipt content corresponding to the From field in the generated receipt data can be stored in plain text (need to further combine event functions and preset The dimension of the condition is used to determine whether to use plaintext storage), then subsequent retrieval operations can be performed on the receipt content in the From field, for example, the transaction volume initiated by a certain account can be counted.

example 3

[0055]

[0056]

[0057] In the above code example 3, by adding the exposure identifier "plain" before the type int of the state variable "price" (or, the exposure identifier plain can be placed after the type int), so that after the code of the smart contract is executed , in each field of the generated receipt data (usually including Topic field, Output field, etc.), the receipt content related to the state variable "price" is allowed to be stored in plain text (need to further combine the event function and the dimension of the preset condition to It is determined whether the plaintext storage is actually used), then the subsequent retrieval operation can be performed on the receipt content related to the state variable "price".

[0058] In an embodiment, the smart contract corresponding to the transaction received by the first blockchain node may be a smart contract written in a high-level language, or may be a smart contract in bytecode form. Among them, when the sm...

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PUM

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Abstract

One or more embodiments of the present specification provide a conditional receipt storage method and node combining code labeling and event typesin combination with code tagging and event types, the method may include: a first blockchain node receiving receives an encrypted transaction corresponding to a smart contract, the code of the smart contract including includes an object tagged by exposing an identifier; the first block chain node decrypts the transaction in the trusted execution environment to obtain a smart contract, wherein the smart contract comprises a special event function; the first block chain node executes the smart contract in a trusted execution environment to obtain receipt data, and the receipt data comprises a log corresponding to the special event function; and the first block chain node stores the receipt data, so that at least one part of the receipt content in the log corresponding to the special event function is stored in a plaintext form, the rest content of the receipt data is stored in a ciphertext form, and the at least one part of the receipt content is matched with the object marked by the exposure identifier and meets a preset condition.

Description

technical field [0001] One or more embodiments of this specification relate to the field of blockchain technology, and in particular to a conditional receipt storage method and node that combine code annotation and event type. Background technique [0002] Blockchain technology is built on top of transmission networks such as peer-to-peer networks. Network nodes in the transmission network use chained data structures to verify and store data, and use distributed node consensus algorithms to generate and update data. [0003] At present, the two biggest challenges in the technology of enterprise-level blockchain platforms are privacy and performance, and it is often difficult to solve these two challenges at the same time. Most solutions trade for privacy by losing performance, or pursue performance with little regard for privacy. Common encryption technologies to solve privacy problems, such as Homomorphic encryption and zero-knowledge proof, are highly complex, poor in ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/27G06F21/60G06Q40/04
CPCG06F21/602G06Q40/04G06F16/27
Inventor 刘琦闫莺魏长征
Owner ADVANCED NEW TECH CO LTD