Analysis and Extension of S/Key-Based Authentication Schemes for Digital Home Networks
Recently, we have proposed two S/Key based authentication schemes for secure remote access in digital home networks. However, because they, like other S/Key based schemes, focus on only authentication, they don’t provide authorization, which is one of the important security services at home network. In this paper, we analyze and extend the schemes to support the authorization service. For this goal, we propose a Lightweight Attribute Certificate (LAC) and Lightweight Authorization Protocol (LAP). Through the LAC, LAP allows clients to be seamlessly authenticated and authorized regardless of their location. Especially, this protocol where the involved parties needs only lightweight cryptographic operations can reduce computational cost with single sign-on.
KeywordsSmart Card Authentication Scheme Home Network User Authentication Scheme Cryptographic Operation
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