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Two-factor authentication method based on photoplethysmography sensor

A technology of photoplethysmography, authentication method, applied in the direction of sensors, digital data authentication, instruments, etc., to achieve the effect of robustness and effectiveness

Active Publication Date: 2020-07-24
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the technical defect that the existing two-factor authentication method requires additional participation of the user, and propose a method of using the photoelectric plethysmography sensor of the smart wristband device to collect the characteristics of the user's heartbeat signal as a factor, handwritten signature, and input password , Gesture unlocking and other common authentication methods as a two-factor combination authentication method

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  • Two-factor authentication method based on photoplethysmography sensor
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  • Two-factor authentication method based on photoplethysmography sensor

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Embodiment Construction

[0039] The method of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0040] Such as figure 1 As shown, a two-factor authentication method based on a photoplethysmography sensor includes the following steps:

[0041] Step 1: Use the infrared light source and the green light source of the photoplethysmography sensor to collect the user's heartbeat signal, and preprocess the heartbeat signal.

[0042] Among them, the specific method of preprocessing is as follows:

[0043] Step 1.1: Use a band-pass filter to process the collected user heartbeat signal to remove noise unrelated to the heartbeat.

[0044] Since the heartbeat signal collected by the smart wristband device is inevitably affected by changes in the external environment and hand movements, the bandpass filter performs preliminary noise reduction on the collected heartbeat signal by shielding signals in other frequency bands. Since the human hear...

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Abstract

The invention relates to a two-factor authentication method based on a photoplethysmography sensor, and belongs to the technical field of mobile computing application. The photoelectric volume pulse wave sensor is used for collecting heartbeat signals of a user. A semi-blind source separation technology and an adaptive filtering technology are utilized to carry out noise removal processing on heartbeat signals interfered by motion artifacts, and pure heartbeat signals are extracted. And time domain and angle domain coordinate conversion is carried out on the extracted heartbeat signals. And the geometrical characteristics are extracted from the converted heartbeat signals, and a series of characteristics capable of uniquely identifying the user are obtained after conversion and encryptionalgorithm processing. Heartbeat signals are collected through the photoelectric volume pulse wave sensor of the intelligent wrist strap device, and double-factor authentication of a user is achieved.According to the invention, high-security identity authentication is supported, and the user is allowed to re-register the alternative credentials so as to resist replay attacks and man-in-the-middleattacks. A user does not need to keep still, and a common verification method can be used at the same time.

Description

technical field [0001] The invention relates to a two-factor identity authentication method, in particular to an identity authentication method based on a heartbeat signal using a photoplethysmography sensor of a smart wristband device, and belongs to the technical field of mobile computing applications. Background technique [0002] With the widespread popularization and application of mobile devices in people's daily behaviors, such as SMS sending and receiving, health care, mobile payment, etc. are increasingly closely related to personal and financial sensitive information, two-factor authentication has been widely used on mobile devices. Two-factor authentication is a method that combines two methods to authenticate users, which further improves the security of the system, enhances the privacy protection of users, and provides an additional security line of defense in addition to the commonly used identity verification methods. [0003] Existing two-factor authenticatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/32G06K9/00A61B5/02A61B5/00
CPCG06F21/32A61B5/0059A61B5/02A61B5/72G06F2218/08
Inventor 李凡曹烨彤
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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