Slides (pdf) - Jesse Kornblum

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BitLocker Drive Encryption • Good documentation, but not complete – Key management systems not described – No implementation of elephant provided • Reverse engineered by Kumar and Kumar – Published paper, linux driver to mount protected volumes – http://www.nvlabs.in/node/9
• Brute Force works – FVEK is in RAM • Key schedule search works – Finds several schedules – Two of the keys make up the FVEK • Some assembly required • Source code analysis – Not an option for most of us BitLocker Drive Encryption
Page 1 and 2: C Y B E R S E C T O R Practical Met
Page 3 and 4: No Encryption Application Operating
Page 5 and 6: Data on the Hard Drive Four score a
Page 7 and 8: Searching for Keys in RAM
Page 9 and 10: Current Methods • Brute Force - T
Page 11 and 12: Current Methods • Source code ana
Page 13 and 14: Tool Marks • Were the screwdriver
Page 15 and 16: • Hard to detect the keys - Small
Page 17: BitLocker Drive Encryption • I am
Page 21 and 22: • AES key schedules - Encryption
Page 23 and 24: BitLocker Tool Marks • 0x0 FVEc p
Page 25 and 26: BitLocker Tool Marks • Not perfec
Page 27 and 28: Finding Tool Marks • How did we d
Page 29 and 30: Forensics Tool Marks • Requires a
Page 31 and 32: • Full Volume Encryption Key (FVE
Page 33 and 34: • Contains E(FVEK, VMK) - FVEK en
Page 35 and 36: Scenario • Legitimate user has Ex
Page 40 and 41: Outline • Introduction • Types
Page 42 and 43: Thank you • ManTech International
Page 44: References • Key Schedule Searchi

Slides (pdf) - Jesse Kornblum

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