| Summary: | 碩士 === 國立交通大學 === 資訊管理所 === 90 === While handheld devices prevail during recent years, mobile commence becomes popular new favor media. Mobile computing may easily be accomplished via cooperating with mobile phone. While transmitting data over wireless networks, handheld devices can’t provide safe enough transmission channel for secure commence data due to the computing power problem. Though there are secure modules provided by many companies for handheld devices, encryption process need more computing power. This kind of module wastes a lot of computing time and comparing with personal computer is too weak. In this thesis, we propose a new framework, named “Delegation Authentication Framework”. It is described in this thesis and increases an authentication server in standard SSL and TLS protocol. The protocol in wireless side is a lite SSL protocol. The framework is not only compatible with SSL and TLS, but also increases encryption speed and enhances security strength. The delegation authentication framework is more appropriate than current security protocol for handheld devices in wireless communications networks.
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