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Modeling and Mitigating Side Channels in Optical and Embedded Sensing Systems
Modeling and Mitigating Side Channels in Optical and Embedded Sensing Systems
Modeling and Mitigating Side Channels in Optical and Embedded Sensing Systems

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211153012
ISBN  
9798384045007
DDC  
620
저자명  
Long, Yan.
서명/저자  
Modeling and Mitigating Side Channels in Optical and Embedded Sensing Systems
발행사항  
[Sl] : University of Michigan, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
191 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
주기사항  
Advisor: Fu, Kevin;Liu, Mingyan.
학위논문주기  
Thesis (Ph.D.)--University of Michigan, 2024.
초록/해제  
요약This thesis investigates how to model and mitigate the security and privacy impact of undefined information channels in the analog-digital interfaces of sensing systems. Sensors bridge the physical and digital worlds and have become a fundamental building block of modern computer systems. The physical and analog nature of sensor hardware, however, creates an inherent gap in the abstraction of sensors when sensor hardware is interfaced with computer software. The lack of comprehensive and proper abstraction causes side channels in physical-digital information transformation, resulting in information leakage and manipulation problems that could compromise the data security and user privacy of emerging cyber-physical technologies. By analyzing the sensing model and several representative examples of camera sensing and other embedded sensors, my thesis first investigates how three key factors of modern sensor design contribute to sensor data leakage problems. These factors include (1) the increasing resolution and sensitivity of sensors, (2) the increasing structural complexity of sensors, and (3) the more standardized but unprotected sensor data distributions. The first factor is demonstrated by a case study of webcams leaking user screen contents during video conferencing when the screen contents are reflected by users' eyeglasses, and generalized to another threat model of smartphone zero-permission accelerometers and gyroscopes leaking touchtone audio. The second factor is demonstrated by exploiting the rolling shutter and movable lens structures of smartphone cameras to extract ambient audio from a stream of photos. The third factor is demonstrated by eavesdropping on the electromagnetic leakage of camera data transmission interfaces to reconstruct confidential camera videos in real time. Besides information leakage, this thesis explains how such side channels in sensors also allow the injection of false information into sensing systems. Specifically, it shows how intentional electromagnetic interference can interact with analog sensing circuits to manipulate the temperature readings of vaccine temperature monitors and induce phantom keystroke inputs on various types of keyboards. Finally, the thesis generalizes the concept of sensor side channels and proposes that when properly controlled, such side channels could be utilized by system defenders to strengthen existing systems, such as synthesizing virtual sensors from existing sensor hardware to perform multimodal sensing and authentication.
일반주제명  
Engineering
일반주제명  
Computer science
일반주제명  
Electrical engineering
키워드  
Sensor security
키워드  
Side channels
키워드  
Information leakage
키워드  
Eavesdropping
키워드  
Authentication
기타저자  
University of Michigan Electrical and Computer Engineering
기본자료저록  
Dissertations Abstracts International. 86-03B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■1001  ▼aLong,  Yan.
■24510▼aModeling  and  Mitigating  Side  Channels  in  Optical  and  Embedded  Sensing  Systems
■260    ▼a[Sl]▼bUniversity  of  Michigan▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a191  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-03,  Section:  B.
■500    ▼aAdvisor:  Fu,  Kevin;Liu,  Mingyan.
■5021  ▼aThesis  (Ph.D.)--University  of  Michigan,  2024.
■520    ▼aThis  thesis  investigates  how  to  model  and  mitigate  the  security  and  privacy  impact  of  undefined  information  channels  in  the  analog-digital  interfaces  of  sensing  systems.  Sensors  bridge  the  physical  and  digital  worlds  and  have  become  a  fundamental  building  block  of  modern  computer  systems.  The  physical  and  analog  nature  of  sensor  hardware,  however,  creates  an  inherent  gap  in  the  abstraction  of  sensors  when  sensor  hardware  is  interfaced  with  computer  software.  The  lack  of  comprehensive  and  proper  abstraction  causes  side  channels  in  physical-digital  information  transformation,  resulting  in  information  leakage  and  manipulation  problems  that  could  compromise  the  data  security  and  user  privacy  of  emerging  cyber-physical  technologies.    By  analyzing  the  sensing  model  and  several  representative  examples  of  camera  sensing  and  other  embedded  sensors,  my  thesis  first  investigates  how  three  key  factors  of  modern  sensor  design  contribute  to  sensor  data  leakage  problems.  These  factors  include  (1)  the  increasing  resolution  and  sensitivity  of  sensors,  (2)  the  increasing  structural  complexity  of  sensors,  and  (3)  the  more  standardized  but  unprotected  sensor  data  distributions.  The  first  factor  is  demonstrated  by  a  case  study  of  webcams  leaking  user  screen  contents  during  video  conferencing  when  the  screen  contents  are  reflected  by  users'  eyeglasses,  and  generalized  to  another  threat  model  of  smartphone  zero-permission  accelerometers  and  gyroscopes  leaking  touchtone  audio.  The  second  factor  is  demonstrated  by  exploiting  the  rolling  shutter  and  movable  lens  structures  of  smartphone  cameras  to  extract  ambient  audio  from  a  stream  of  photos.  The  third  factor  is  demonstrated  by  eavesdropping  on  the  electromagnetic  leakage  of  camera  data  transmission  interfaces  to  reconstruct  confidential  camera  videos  in  real  time.  Besides  information  leakage,  this  thesis  explains  how  such  side  channels  in  sensors  also  allow  the  injection  of  false  information  into  sensing  systems.  Specifically,  it  shows  how  intentional  electromagnetic  interference  can  interact  with  analog  sensing  circuits  to  manipulate  the  temperature  readings  of  vaccine  temperature  monitors  and  induce  phantom  keystroke  inputs  on  various  types  of  keyboards.  Finally,  the  thesis  generalizes  the  concept  of  sensor  side  channels  and  proposes  that  when  properly  controlled,  such  side  channels  could  be  utilized  by  system  defenders  to  strengthen  existing  systems,  such  as  synthesizing  virtual  sensors  from  existing  sensor  hardware  to  perform  multimodal  sensing  and  authentication.
■590    ▼aSchool  code:  0127.
■650  4▼aEngineering
■650  4▼aComputer  science
■650  4▼aElectrical  engineering
■653    ▼aSensor  security
■653    ▼aSide  channels
■653    ▼aInformation  leakage
■653    ▼aEavesdropping
■653    ▼aAuthentication
■690    ▼a0537
■690    ▼a0984
■690    ▼a0544
■71020▼aUniversity  of  Michigan▼bElectrical  and  Computer  Engineering.
■7730  ▼tDissertations  Abstracts  International▼g86-03B.
■790    ▼a0127
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164517▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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