Open AccessAmbient audio authentication
Author(s) -
Jia-Ning Luo,
Meng-Hsuan Tsai,
Nai-Wei Lo,
Chih-Yang Kao,
MingTa Yang
Publication year - 2019
Publication title -
mathematical biosciences and engineering
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 0.451
H-Index - 45
eISSN - 1551-0018
pISSN - 1547-1063
DOI - 10.3934/mbe.2019327
Subject(s) - computer science , authentication (law) , signal (programming language) , phone , computer security , audio signal , real time computing , embedded system , computer hardware , digital signal processing , philosophy , linguistics , programming language
In the IoT environment, many terminal devices are deployed in unattended areas. If these devices are moved elsewhere by an attacker, the wrong environmental sensing values are obtained, which causes a major disaster. In this paper, we propose an ambient authentication mechanism based on audio to be used in multi-factor authentication by using the ambient sensors equipped with a smart phone. An ultrasonic signal that is not detectable by the human ear was transmitted by the authenti-cator, and the attenuated signal received by the user being authenticated was transmitted back to the authentication server. The transmitted and received decoded symbol sequences of the audio signal are used to calculated the bit error rate, which is used to measure the relative distance. Our proposed method can narrow the authentication distance to less than 0.5 meters, which can greatly improve the security of the authentication system.