Architecture of a server-aided signature service (SASS) for mobile networks

Authors:
Liang Cai;Xiaohu Yang;Chun Chen
Affiliations:
College of Computer Science and Technology, Zhejiang University, Hangzhou, China;College of Computer Science and Technology, Zhejiang University, Hangzhou, China;College of Computer Science and Technology, Zhejiang University, Hangzhou, China
Venue:
ICN'05 Proceedings of the 4th international conference on Networking - Volume Part II
Year:
2005

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Abstract

In recent years there is an explosion in the number of applications for mobile devices. Many of these applications require the ability to issue digital signatures on behalf of their users. Traditionally, digital signatures are based on asymmetric cryptographic techniques which make them computationally expensive. Currently, all mobile devices tend to have limited computational capabilities and equally limited power. Instead of every mobile device performing computationally intensive cryptographic operations, a Server-aided Signature Service (SASS) was designed to offload PKI computation from clients in mobile networks such as GSM and CDMA. The paper details the design of SASS. After thorough performance analysis, we conclude that SASS can significantly improve the signing performance of the mobile clients.