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Method and device for generating and verifying linkable ring signature in block chain

A ring signature and blockchain technology, applied in the blockchain field, can solve problems such as information privacy cannot be guaranteed

Active Publication Date: 2019-07-12
ADVANCED NEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complete openness of blockchain ledgers, information privacy cannot be guaranteed

Method used

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  • Method and device for generating and verifying linkable ring signature in block chain
  • Method and device for generating and verifying linkable ring signature in block chain
  • Method and device for generating and verifying linkable ring signature in block chain

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Embodiment Construction

[0034] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. Implementations described in the following exemplary embodiments do not represent all implementations consistent with one or more embodiments of this specification. Rather, they are merely examples of apparatuses and methods consistent with aspects of one or more embodiments of the present specification as recited in the appended claims.

[0035] It should be noted that in other embodiments, the steps of the corresponding methods are not necessarily performed in the order shown and described in this specification. In some other embodiments, the method may include more or less steps than those described in this specification. In addition, a single step described in this...

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Abstract

One or more embodiments of the invention provide a method and a device for generating and verifying a linkable ring signature in a block chain. The method may include: determining a signer array (P_j,ID_j), the signer array (P_j, ID_j) comprising a public key P_j of a signer and a unique identifier ID_j of an asset to be spent held by the signer, G being a base point of an elliptic curve, | G | =p and p being a prime number, x_j being a private key of the signer and 0 <x_j<p; generating a key image I according to the private key x_j of the signer and the signer array (P_j, ID_j); and when alinkable ring signature is generated for the transaction M related to the asset to be spent, adding the key mirror image I to the linkable ring signature.

Description

technical field [0001] One or more embodiments of this specification relate to the field of blockchain technology, and in particular to a method and device for generating and verifying a linkable ring signature in a blockchain. Background technique [0002] Blockchain technology (also known as distributed ledger technology) is a decentralized distributed database technology, which has many characteristics such as decentralization, openness and transparency, non-tamperable, and trustworthy, and is applicable to many In application scenarios with high demand for data reliability. However, due to the complete openness of blockchain ledgers, information privacy cannot be guaranteed. Contents of the invention [0003] In view of this, one or more embodiments of this specification provide a method and device for generating and verifying a linkable ring signature in a blockchain. [0004] In order to achieve the above purpose, one or more embodiments of this specification provi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q20/38H04L9/32H04L29/08
CPCG06Q20/3825G06Q20/3829G06Q20/389H04L9/3255G06Q20/3827H04L9/0643H04L9/0869H04L9/3066H04L67/10H04L9/50
Inventor 张文彬
Owner ADVANCED NEW TECH CO LTD
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