NDLI: Securing password recovery through dispersion

Content Provider	IEEE Xplore Digital Library
Author	Jajodia, S. Litwin, W. Schwarz, S.J.T.
Copyright Year	2012
Description	Author affiliation: Informatica y Ciencias de la Computación, Universidad Católica del Uruguay, Montevideo, Uruguay (Schwarz, S.J.T.) \|\| Center for Secure Information Systems, George Mason University, Fairfax, Virginia, USA (Jajodia, S.) \|\| Lamsade, Université Paris Dauphine, Paris, France (Litwin, W.)
Abstract	Passwords form the Achilles heel of most uses of modern cryptography. Key recovery is necessary to provide continuous access to documents and other electronic assets in spite of possible loss of a password. Key escrow services provide key recovery for the owner, but need to be trusted. Additionally, a user might want to divulge passwords in case of his/her death or incapacitation, but not before. We present here a scheme that uses dispersion to provide trusted escrow services. Our scheme uses secret sharing to disperse password recovery information over several escrow services that authenticate based on a weak password. To protect against dictionary attacks, each authentication attempt takes a noticeable, but tolerable time (e.g. minutes). We achieve this by having the share of the secret be the solution of a puzzle that is solved by brute force in time depending on the number of processors employed. This additionally prevents escrow agencies from optimizing their part in recovering a password by pre-computing and storing their share in a more accessible and hence vulnerable format.
Starting Page	228
Ending Page	233
File Size	21552646
Page Count	6
File Format	PDF
ISBN	9781467347938
e-ISBN	9781467347945
DOI	10.1109/CASoN.2012.6412407
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-11-21
Publisher Place	Brazil
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Password Recovery Dictionaries Force Public key Authentication Cloud Password Escrow Standards Dispersion
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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