- 學位論文
植基於公有雲與私有雲之行動即時通訊研究
Mobile Instant Messaging Research based on Public Cloud and Private Cloud
摘要
行動即時通訊軟體是智慧型行動裝置的應用，使用者透過通訊伺服器傳遞語音、視訊、文字和檔案資料，主要由營運商管理。目前現有的系統是在公共網路上，任何人都能使用行動即時通訊進行各項服務，因此在雲端的分類是屬於公有雲。許多機關或企業逐漸利用行動通訊軟體來進行公務交談，談話內容可能為機密訊息。當通訊伺服器的安全性不足時，機密訊息可能會被竊取。本文提出了以雲端概念建立的行動即時通訊系統，叫做「雲階層式架構行動即時通訊」(Cloud Hierarchical Architecture Mobile Instant Messaging)，主要是利用公有雲與私有雲的概念建立階層式的行動即時通訊系統，並以公有雲為父節點，私有雲為子節點架構而成。使用者透過CHAMIM-公有雲傳遞訊息，企業或機關使用者則透過CHAMIM-私有雲傳遞私密訊息。實驗結果顯示，CHAMIM允許企業自行管理CHAMIM-私有雲伺服器，也因為伺服器是在企業內部防火牆內，因此安全性相對較高，使用者透過CHAMIM-公有雲伺服器來交談，也能夠加入CHAMIM-私有雲進行私密性的談話，功能上除了基本即時通訊功能外，對於音訊通訊方面，提供了SIP(Session Initiation Protocol)介面連接現有的SIP通訊系統。
並列摘要
Mobile Instant Messaging (MIM) is a smart device application where a user sends audio, video, text message and file data via a communication server. Currently, MIM is available in the public network. Anyone can access its services. When it is cloud based, it belongs to the public cloud. More and more enterprises are starting to use MIM to communicate official message; some contained confidential messages. When the security of communication servers is inadequate, messages could be stolen. This paper presents the concept of cloud-built mobile instant messaging system called Cloud Hierarchical Architecture Mobile Instant Messaging (CHAMIM). The main architecture involves the use of public and private cloud as a foundation for the hierarchical architecture of mobile instant messaging system. It is based on the public cloud as a parent node and private cloud as the child node. A user sends message by CHAMIM-public cloud and enterprise users sends secret messages via CHAMIM-private cloud. Experimental results show that CHAMIM allows enterprises to manage CHAMIM-private cloud communication server. The server is the internal firewall. Therefore, security is relatively strong. The user can send messages via the CHAMIM-public cloud and can also join the CHAMIM-private cloud to transmit secret messages. Moreover CHAMIM has also the basic MIM features and also provides SIP telephone interface.