Biological characteristic password desensitization protection method based on SM9 algorithm

A biometric and algorithmic technology, applied in digital data protection, computing, computer components, etc., can solve problems such as information security

Pending Publication Date: 2021-11-23
成都天瑞芯安科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the irrevocability and privacy of biometrics, once the biometric te

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  • Biological characteristic password desensitization protection method based on SM9 algorithm
  • Biological characteristic password desensitization protection method based on SM9 algorithm
  • Biological characteristic password desensitization protection method based on SM9 algorithm

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Embodiment Construction

[0025] The biometric desensitization protection method and system based on the SM9 algorithm will be described below in conjunction with the accompanying drawings.

[0026] image 3 It is a schematic diagram of the application of the present invention in fingerprint biometric identification. The figure includes a user, a terminal with an integrated fingerprint sensor.

[0027] fingerprint registration

[0028] A1: The user presses the fingerprint on the terminal, and the fingerprint is collected into an image by the fingerprint sensor on the terminal. After the image is processed, the fingerprint feature template is obtained. It is assumed that the feature template is composed of N feature points, and each feature point Ni is a binary group (feature Type, characteristic value), encoded into a value according to the agreed rules.

[0029] A2: The user enters a random number k, and k and the fingerprint feature template are input into the algorithm processing module of the te...

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PUM

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Abstract

The invention provides a biological characteristic desensitization protection method based on an SM9 algorithm. Specifically, in a registration stage, biological characteristics are collected to obtain a biological characteristic template, a random number k is generated as a secret, the biological characteristic template is used as a parameter, and the k is processed by using an SM9 algorithm to obtain a data set Q; and, in the verification stage, biological features are collected to obtain a biological feature template, the biological feature template and the data set Q are used for calculation to obtain a result s, the consistency of the biological features and the registered biological features is judged through s and k, and then biological feature recognition is completed. According to the method, biological characteristic template matching is converted into cryptographic calculation on a data set, the data set Q does not contain any information of the biological characteristic template, the biological characteristic template is irreversibly deduced, and the biological characteristic template can be revoked and has a desensitization property; and the data set Q can be used for replacing a biological characteristic template to be stored, transmitted and used, and recognition is not affected while biological characteristic desensitization protection is achieved.

Description

technical field [0001] The present invention relates to the field of biological feature identification, especially the field of biological feature password protection, including but not limited to this field. Background technique [0002] Biometrics refers to the physiological or behavioral characteristics used to identify or verify the identity of an individual. The digital description of biometrics constitutes a biometric template. In the field of electronic information, the storage, transmission and identification of biometrics are carried out through biometric templates. Yes, a biometric template consists of a series of feature points. Unless otherwise specified, this document does not distinguish between biometrics and biometric templates. [0003] Biometric features are unique and invariant, and can uniquely confirm the identity of a living body. This method is called biometric identification. [0004] as attached Figure 4 As shown, biometric identification includes ...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06F21/60H04L9/32
CPCG06F21/602H04L9/3249
Inventor 尚望兰天
Owner 成都天瑞芯安科技有限公司
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