NDLI: Unified Public Key Infrastructure Supporting Both Certificate-Based and ID-Based Cryptography

Content Provider	IEEE Xplore Digital Library
Author	Byoungcheon Lee
Copyright Year	2010
Abstract	Certificate-based cryptography and ID-based cryptography have been designed under different theoretical backgrounds and they have their own advantages and drawbacks, but there have been few works which try to provide them together in an efficient way. Chen et al. [4] considered a hybrid scheme of public key infrastructure (PKI) and ID-based encryption (IBE), and also discussed various trust relationship among multiple authorities, but they have not discussed more in-depth implementation issues of the hybrid scheme. In ID-based cryptography issuing private keys to users in escrow-free way had been an important issue. Lee et al. [12], [13] proposed a unique private key issuing protocol in the single authority multiple-observer (SAMO) model which can reduce the user authentication load a lot, but these schemes are subject to several attacks due to the lack of verifiable authentication of protocol messages [11].In this paper we show that these two problems can be solved by combining certificate-based and ID-based cryptography. In the proposed scheme certificate is issued to user for user-chosen public key and ID-based private key is issued to user through a private key issuing protocol. In the private key issuing protocol user is authenticated using the certificate and protocol messages are blinded using the certified public key of the user, thus the private key issuing protocol becomes private and also verifiable,which solves the authentication problem of [13].We further present the concept of unified public key infrastructure (UPKI) in which both certificate-based and ID-based cryptosystems are provided to users in a single framework. We also show that if interactions between end users are mainly executed using ID-based cryptography, then end users don’t need to manage other end users’ certificates, which is a great efficiency gain than traditional PKI.
Starting Page	54
Ending Page	61
File Size	170197
Page Count	8
File Format	PDF
ISBN	9781424458790
e-ISBN	9781424458806
DOI	10.1109/ARES.2010.49
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-02-15
Publisher Place	Poland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Availability Identity-based encryption Key privacy agent Reliability theory Unified public key infrastructure ID-based cryptography Certification Cryptographic protocols Hybrid cryptography Key generation and certification authority Public key Authentication Information security Certificate-based cryptography Public key cryptography Hybrid power systems Bilinear pairing Private key issuing protocol
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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