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Digital certificate generating method and digital certificate verifying method

A technology of digital certificates and coefficients, which is applied in the field of biometrics, can solve the problems of using by malicious people, and achieve the effect of ensuring validity and solving safe storage and transmission

Active Publication Date: 2017-01-11
裘羽
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The existing biometric identification methods have the following defects: Since the biometric template records the complete information of the feature points, once the biometric template is leaked, it may be used by malicious people to restore the biometric image based on the biometric template

Method used

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  • Digital certificate generating method and digital certificate verifying method
  • Digital certificate generating method and digital certificate verifying method
  • Digital certificate generating method and digital certificate verifying method

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Embodiment Construction

[0044] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the present invention. Invented some embodiments, but not all embodiments.

[0045] Such as figure 1 As shown, this embodiment discloses a method for generating a digital certificate, which may include the following steps 101 to 105:

[0046] 101. Based on a preset key pair generation rule, generate a key pair for the target digital certificate. The key pair includes a public key and a private key; the preset key pair generation rule can use an existing digital certificate secret. The method of generating the key pair will not be repeated in this embodiment.

[0047] 102. Decompose the private key based on the preset order of ...

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Abstract

The invention discloses a digital certificate generating method and a digital certificate verifying method. The generating method comprises the following steps: generating a key pair for a target digital certificate based on a preset key pair generating rule; based on the order number of a preset biological characteristic fuzzy mapping polynomial, decomposing the private pair to determine the coefficients of the biological characteristic fuzzy mapping polynomial; based on the biological characteristic fuzzy mapping polynomial after coefficient determination, performing fuzzy mapping of characteristic point information contained in a preset biometric template of a target user to get a fuzzy biometric template; based on the public key, the fuzzy biometric template and the identity information of the target user, generating a to-be-signed digital certificate; and performing user identity authentication on the to-be-signed digital certificate through a third party to get a target digital certificate. Through fuzzy mapping of a biometric template, the problem on how to store and transmit a biometric template safely is solved. When a user gets hold of a private key, the security of authentication is guaranteed, and attacks such as 'replay' are prevented.

Description

Technical field [0001] The invention relates to the technical field of biometrics, in particular to a method for generating and verifying a digital certificate. Background technique [0002] Biometrics technology is the close integration of computers with high-tech methods such as optics, acoustics, biosensors, and biostatistics principles, using the human body’s inherent physiological characteristics (such as fingerprints, face, iris, etc.) and behavioral characteristics (such as handwriting, sound , Gait, etc.) to perform personal identification technology. Biometric identification usually compares the user's on-site biometric characteristics (including physiological and behavioral characteristics) with the user's pre-saved biometric template to verify their true identity. [0003] The so-called biometric template records certain biometrics of people, such as fingerprints, iris, finger veins and other biometrics corresponding to complete information. Taking a fingerprint as an ...

Claims

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Application Information

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IPC IPC(8): H04L9/32H04L9/08
CPCH04L9/0866H04L9/0869H04L9/3263H04L9/3271
Inventor 石丰
Owner 裘羽
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