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Privacy protection method and device based on block chain and electronic equipment

A technology of privacy protection and block chain, which is applied in the field of privacy protection methods, devices and electronic equipment based on block chain, and can solve problems involving user privacy

Active Publication Date: 2021-01-08
ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, when performing the above-mentioned summary and analysis calculations, user privacy issues may be involved

Method used

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  • Privacy protection method and device based on block chain and electronic equipment
  • Privacy protection method and device based on block chain and electronic equipment
  • Privacy protection method and device based on block chain and electronic equipment

Examples

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Embodiment Construction

[0109] 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. The implementations described in the following exemplary examples do not represent all implementations consistent with this specification. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present specification as recited in the appended claims.

[0110] The terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the t...

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Abstract

The embodiment of the invention provides a privacy protection method and device based on a block chain and electronic equipment. The method is applied to a distributed digital identity system client,a target account is logged in the client, and the method comprises the steps of acquiring first encrypted data from a block chain node; decrypting the first encrypted data by using a first private keycorresponding to the first public key to obtain each verifiable declaration issued by each issuer; performing a preset encryption operation based on a second public key corresponding to the block chain node and each verifiable declaration to obtain second encrypted data; and sending the second encrypted data to the block chain node, and initiating a target transaction to the block chain node, sothat the block chain node performs a preset decryption operation on the second encrypted data and then performs joint calculation to obtain a target identity certificate of the target user. Therefore,when joint calculation is carried out on the verifiable declarations issued by multiple issuers, the privacy of the user is not leaked, and the privacy security of the user is protected.

Description

technical field [0001] One or more embodiments of this specification relate to the field of blockchain technology, and in particular to a blockchain-based privacy protection method, device, and electronic equipment. Background technique [0002] With the continuous development of technology, blockchain technology has been applied in many fields, such as in the field of digital finance. At present, on the one hand, it is necessary to summarize, analyze and calculate the digital assets and various identity information of users on the blockchain according to business needs, and the user's digital assets and various identity information may involve different issuing agencies. On the other hand, when performing the above summary and analysis calculations, the user's privacy issues may be involved. Therefore, on the premise of not revealing the user's privacy, how to summarize, analyze and calculate the user's digital assets and various identity information is of great significan...

Claims

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Application Information

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IPC IPC(8): G06F21/60G06F21/62G06F21/64G06Q20/38G06K17/00
CPCG06F21/602G06F21/6245G06F21/64G06K17/0025G06Q20/3825G06Q20/3829
Inventor 孙善禄李书博
Owner ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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