Disk encryption i assumptions i disk layout known to

This preview shows page 9 - 15 out of 29 pages.

Disk Encryption I Assumptions I Disk layout known to the adversary I Content of most sectors known to adversary I Adversary can alter content of some sectors and observe result I Adversary knows that OS may alter some sectors in a predictable way
Image of page 9

Subscribe to view the full document.

Disk Encryption I Attack scenarios I Protect only data at rest I What if: I OS is running, or I Computer is in stand-by
Image of page 10
Disk Encryption I Attack scenarios I Protect only data at rest I What if: I OS is running, or I Computer is in stand-by I Decryption key must be loaded in memory!
Image of page 11

Subscribe to view the full document.

Disk Encryption I Attacker cannot directly control the computer (e.g., screen is locked) I Rebooting computer will make data unaccessible I How does she extract data from the disk?
Image of page 12
DMA Attack I DMA-enabled devices (e.g., hard disk controllers) can access memory directly I Read/write any physical location, bypassing OS I Firewire (IEEE-1394), Thunderbolt, and ExpressCard also supports DMA . . . I Any device connected to the bus can extract the content of main memory
Image of page 13

Subscribe to view the full document.

How About Powering Off the Computer?
Image of page 14
Image of page 15
  • Spring '18
  • Trusted Platform Module, Data remanence, Full disk encryption, Cold boot attack, disk encryption

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern