NDLI: Key Exchange (KX) - a next generation protocol to synchronise PGP Keyservers

Content Provider	IEEE Xplore Digital Library
Author	von Bidder, A. Weiler, N.
Copyright Year	2003
Description	Author affiliation: Swiss Fed. Inst. of Technol., Zurich, Switzerland (von Bidder, A.; Weiler, N.)
Abstract	In the Internet, securing email has always been an important issue. Various standards and products have been created. One of the most successful standards is OpenPGP by J. Callas et al. (1998), which uses public key cryptography (R. L. Rivest et al. (1977) and others) and is implemented in systems like Pretty Good Privacy according to P. Zimmerman (1995), Gnu Privacy Guard by W. Koch, Hushmail, and others. A well-known difficulty with the use of public key cryptographic systems is the verification and distribution of the public keys. OpenPGP solves the problem of verifying the authenticity of a public key by having users certify each others keys, building a "Web of Trust" described by P. Feisthammel (1997) by bundling these key certificates with each users public key. Therefore, adding a new public key and updating an existing public key (or replacing it by a new version) are the two most important operations of any PGP public key repository. To allow easy distribution of PGP public keys, the OpenPGP community established a network of open access public keyservers, allowing users of OpenPGP software to freely exchange public keys. The nodes of this keyserver network synchronise their database by exchanging new public keys and key updates amongst each other, virtually building one global key database. At the moment, this synchronisation is done with an inefficient and ineffective email based protocol. This paper describes the implementation of an alternative protocol - KX - on the popular pksd keyserver according to M. Horowitz (1997), based on direct TCP connections between the keyservers and unambiguous identifiers for every key update or new key. With the dropping of the dependency on a working mail system and the improved fault mechanisms, KX is a lightweight alternative in terms of used network, disk and CPU resources.
Sponsorship	IEEE Comput. Soc. Tech. Committee on Data Eng. Concurrent Eng. Res. Center (CERC) West Virginia Univ
Starting Page	249
Ending Page	254
File Size	263932
Page Count	6
File Format	PDF
ISBN	0769519636
ISSN	10801383
DOI	10.1109/ENABL.2003.1231416
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-06-11
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Public key Electronic mail Public key cryptography Privacy Databases Multicast protocols Switches Internet Postal services Cryptographic protocols
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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