A comparative study of SPKI/SDSI and K-SPKI/SDSI systems. | [Information technology Journal • 2007]

Author(s):

1. V. Vasudevan: Department of Information Technology, Madras Institute of Technology, Anna University, Chennai, Tamilnadu, India

2. N. Sivaraman: Department of Information Technology, Madras Institute of Technology, Anna University, Chennai, Tamilnadu, India

3. S. Senthil Kumar: Department of Information Technology, Madras Institute of Technology, Anna University, Chennai, Tamilnadu, India

4. R. Muthuraj: Department of Information Technology, Madras Institute of Technology, Anna University, Chennai, Tamilnadu, India

5. J. Indumathi: Department of Computer Science and Engineering, College of Engineering, Anna University, Chennai, Tamilnadu, India

6. G. V. Uma: Department of Computer Science and Engineering, College of Engineering, Anna University, Chennai, Tamilnadu, India

Abstract:

SPKI/SDSI is a popular trust-management system which defines a formal language for expressing authorization and access-control policies and relies on an algorithm to determine when a specific request can be granted. It also provides support for delegation of authority. K-SPKI/SDSI is a trust management system in which SPKI/SDSI is used in conjunction with Kerberos. This study focuses on differences between the two systems. SPKI/SDSI has seen limited deployment because of the fact that it is PKI-based, i.e., every principal is required to have a public-private key pair. K-SPKI/SDSI overcomes this disadvantage by using Kerberos for local authentication. The authors also compared the performance of the two systems based on various parameters such as Time taken to authenticate, Number of key pairs required and Number of certificates generated.

Page(s): 1208-1216

DOI: DOI not available

Published: Journal: Information technology Journal, Volume: 6, Issue: 8, Year: 2007

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