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Recovering Fingerprints from In-Display Fingerprint Sensors via Electromagnetic Side Channel

Tao Ni, Xiaokuan Zhang, Qingchuan Zhao

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

Recently, in-display fingerprint sensors have been widely adopted in newly-released smartphones. However, we find this new technique can leak information about the user's fingerprints during a screen-unlocking process via the electromagnetic (EM) side channel that can be exploited for fingerprint recovery. We propose FPLogger to demonstrate the feasibility of this novel side-channel attack. Specifically, it leverages the emitted EM emanations when the user presses the in-display fingerprint sensor to extract fingerprint information, then maps the captured EM signals to fingerprint images and develops 3D fingerprint pieces to spoof and unlock the smartphones. We have extensively evaluated the effectiveness of FPlogger on five commodity smartphones equipped with both optical and ultrasonic in-display fingerprint sensors, and the results show it achieves promising similarities in recovering fingerprint images. In addition, results from 50 end-to-end spoofing attacks also present FPLogger achieves 24% (top-1) and 54% (top-3) success rates in spoofing five different smartphones. © 2023 ACM.
Original languageEnglish
Title of host publicationCCS '23 - Proceedings of the 2023 ACM SIGSAC Conference on Computer and Communications Security
Place of PublicationNew York, NY
PublisherAssociation for Computing Machinery
Pages253-267
Number of pages15
ISBN (Print)979-8-4007-0050-7
DOIs
Publication statusPublished - 2023
Event30th ACM Conference on Computer and Communications Security (ACM CCS 2023) - Tivoli Congress Center, Copenhagen, Denmark
Duration: 26 Nov 202330 Nov 2023
https://www.sigsac.org/ccs/CCS2023/index.html

Conference

Conference30th ACM Conference on Computer and Communications Security (ACM CCS 2023)
Abbreviated titleCCS 2023
PlaceDenmark
CityCopenhagen
Period26/11/2330/11/23
Internet address

Funding

We sincerely thank all anonymous reviewers for their constructive feedback. This work was supported by CityU APRC grant 9610563, Hong Kong RGC (CityU 21219223, C1029-22G). Any opinions, findings, and conclusions in this paper are those of the authors and not necessarily of the supported organizations.

Research Keywords

  • Electromagnetic side channels
  • In-display fingerprint sensors
  • denoising diffusion model

RGC Funding Information

  • RGC-funded

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