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Method and system for generating private key of blockchain electronic wallet based on fingerprint information

A fingerprint information and electronic wallet technology, applied in the field of information security, can solve the problems of inability to effectively avoid the risk of theft, weak correlation of fingerprint feature information, and theft of private keys, so as to avoid the risk of theft and illegal use , strong correlation, and strengthen the effect of decentralization

Active Publication Date: 2021-03-23
易保互联医疗信息科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the private key is often weakly associated with the user's fingerprint feature information. Once the private key is lost or forgotten to carry the storage terminal, it cannot be reproduced, and the private key can only be regenerated
In addition, when the mobile phone, tablet computer and other devices where the user stores the private key are stolen, the user's private key will face the risk of being stolen
[0005] It can be seen from the above that no matter whether the client stores it or the operator stores it, the private key cannot effectively avoid the risk of being stolen, and it cannot avoid the threat of transaction security.

Method used

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  • Method and system for generating private key of blockchain electronic wallet based on fingerprint information
  • Method and system for generating private key of blockchain electronic wallet based on fingerprint information
  • Method and system for generating private key of blockchain electronic wallet based on fingerprint information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] figure 1 It is a flowchart of a method for generating a private key of a blockchain electronic wallet based on fingerprint information provided by an embodiment of the present application. Such as figure 1 As shown, the private key generation method of the blockchain electronic wallet based on fingerprint information includes the following steps:

[0076] S1. Collect images of user fingerprints.

[0077] S2. Perform binarization processing on the fingerprint image to obtain a binarized fingerprint image.

[0078] S3. Extract fingerprint feature points from the binary fingerprint image, and construct a feature point set according to all the extracted fingerprint feature points. The specific process is:

[0079] It should be noted that the fingerprint feature points include the endpoints and bifurcation points of the fingerprint ridges. Wherein, the endpoint refers to the end of the ridge, and the bifurcation point refers to the intersection of three ridges.

[0080]...

Embodiment 2

[0114] Such as figure 2 As shown, on the basis of the above private key generation method of blockchain electronic wallet based on fingerprint information, the application also provides a private key generation system of blockchain electronic wallet based on fingerprint information, which includes an image acquisition module 1. Binarization processing module 2, set construction module 3, normalization matrix module 4 and generation module 5.

[0115] Wherein, the image collection module 1 is used for collecting the fingerprint information of the user.

[0116] The binarization processing module 2 is used for performing binarization processing on the fingerprint image to obtain a binarized fingerprint image.

[0117] The set construction module 3 is used to extract fingerprint feature points from the binary fingerprint image, and construct a set of feature points according to all the extracted fingerprint feature points.

[0118] The normalization matrix module 4 uses each e...

Embodiment 3

[0145] Such as image 3 As shown, the present application also provides a block chain-based personal electronic wallet, which includes a private key, the private key is generated by any of the above private key generation methods, and the private key generation method is stored on the block chain as a smart contract. When the user needs to obtain the private key, he only needs to call the smart contract from the blockchain, and use the private key generation method to regenerate the private key corresponding to the user's fingerprint.

[0146] By adopting the private key generation method of the blockchain electronic wallet based on fingerprint information in this application, the private key no longer needs to be recorded, and the risk of being stolen and illegally used can be avoided. This method can strengthen the decentralized characteristics of the blockchain personal electronic wallet. No storage medium is required, and when the private key is lost or forgotten to carry...

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PUM

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Abstract

The invention provides a private key generation method and system of a blockchain electronic wallet based on fingerprint information, and the method comprises the following steps: carrying out the image collection of a user fingerprint; Carrying out binarization processing on the fingerprint image to obtain a binarized fingerprint image; Extracting fingerprint feature points from the binary fingerprint image, and constructing a feature point set according to all the extracted fingerprint feature points; Obtaining a normalized matrix according to the feature point set; And generating a privatekey corresponding to the user fingerprint by using the normalized matrix. The private key is generated based on the strong authentication biological characteristic information, the correlation betweenthe private key and the fingerprint characteristic information of the user is strong, the security of the private key can be improved, and the private key cannot be easily reckoned to obtain a specific value. In addition, the private key does not need to be stored any more, and the risks of embezzlement and illegal use can be avoided. And when the private key is lost or forgotten to carry the storage device, the private key can reappear according to the fingerprint characteristic information of the user.

Description

technical field [0001] The application belongs to the technical field of information security, and in particular relates to a method and system for generating a private key of a blockchain electronic wallet based on fingerprint information. Background technique [0002] In blockchain-based electronic wallet technology, asymmetric encryption technology has a crucial impact on the security and reliability of transactions. In asymmetric encryption technology, the public key and private key are generated by an encryption algorithm, the public key is used for encryption, and the private key is used for decryption. Under normal circumstances, the public key and private key of the e-wallet user are generated during registration and remain unchanged. The private key is held by the user himself and cannot be disclosed to others, otherwise the security of his transaction will be greatly threatened. [0003] In the prior art, the public key and the private key are randomly generated ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06Q20/36G06Q20/38G06Q20/40H04L9/08
Inventor 金以东李雪莉王语莫周大胜
Owner 易保互联医疗信息科技(北京)有限公司