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Identity-Based Key Agreement Protocols in a Multiple PKG Environment

Title
Identity-Based Key Agreement Protocols in a Multiple PKG Environment
Author
오희국
Keywords
ID-based cryptosystem; bilinear map; key agreement protocol; multiple PKG
Issue Date
2005-05
Publisher
SPRINGER-VERLAG BERLIN
Citation
International Conference on Computational Science and Its Applications; Computational Science and Its Applications – ICCSA 2005, Page. 877-886
Abstract
To date, most identity-based key agreement protocols are based on a single PKG (Private Key Generator) environment. In 2002, Chen and Kudla proposed an identity-based key agreement protocol for a multiple PKG environment, where each PKG shares identical system parameters but possesses a distinct master key. However, it is more realistic to assume that each PKG uses different system parameters. In this paper, we propose a new two party key agreement protocol between users belonging to different PKGs that do not share system parameters. We also extend this protocol to a tripartite key agreement protocol. Our two party protocol requires the same amount of pairing computation as Smart’s protocol for a single PKG environment and provides PKG forward secrecy. We show that the proposed key agreement protocols satisfy every security requirements of key agreement protocols.
URI
https://link.springer.com/chapter/10.1007/11424925_92http://repository.hanyang.ac.kr/handle/20.500.11754/110633
ISBN
978-3-540-25863-6
DOI
10.1007/11424925_92
Appears in Collections:
COLLEGE OF COMPUTING[E] > COMPUTER SCIENCE(소프트웨어학부) > Articles
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