NDLI: Recovery of Encryption Keys from Memory Using a Linear Scan

Content Provider	IEEE Xplore Digital Library
Author	Hargreaves, C. Chivers, H.
Copyright Year	2008
Description	Author affiliation: Cranfield Univ., Shrivenham (Hargreaves, C.; Chivers, H.)
Abstract	As encrypted containers are encountered more frequently the need for live imaging is likely to increase. However, an acquired live image of an open encrypted file system cannot later be verified against any original evidence, since when the power is removed the decrypted contents are no longer accessible. This paper shows that if a memory image is also obtained at the same time as the live container image, by the design of on-the-fly encryption, decryption keys can be recovered from the memory dump. These keys can then be used offline to gain access to the encrypted container file, facilitating standard, repeatable, forensic file system analysis. The recovery method uses a linear scan of memory to generate trial keys from all possible memory positions to decrypt the container. The effectiveness of this approach is demonstrated by recovering TrueCrypt decryption keys from a memory dump of a Windows XP system.
Starting Page	1369
Ending Page	1376
File Size	379890
Page Count	8
File Format	PDF
ISBN	9780769531021
DOI	10.1109/ARES.2008.109
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-04
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Availability Forensic Computing Forensics Containers Read-write memory Digital Evidence Encryption Security Packaging machines File systems Hard disks Universal Serial Bus Live Forensics Cryptography
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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