Abstract: Due to rapid development in cloud computing and integration of new tools that enhances the development in cloud computing application, but cloud computing is in child state so that cloud security is often required. Many organizations want to store their confidential sensitive data in cloud in order to reduce capital expanses. Traditional way is to store data in encrypted format against the un trusted cloud service provider (CSP). The key problem is to maintain different organization structure and establishing un access control policy (UCP) for those confidential encrypted data, when users are no longer employee of organization. This paper aims to solve problem for supporting different organization structure and maintain their hierarchy of various users in the organizations, maintain record of employees. Our system is having integrating key feature of Hierarchical attribute based encryption (HABE) and cipher text policy attribute based encryption (CP-ABE) system, so as not only achieved

• Publication Date: 17-Jun-2012
• DOI: 10.15224/978-981-07-2579-2-127
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Abstract: Access technology holds key to getting attached to Internet from customer premises equipment in a broadband network. The use of different physical media types such as ATM, Ethernet and SONET have further paved way for use of one or combination of such access protocols to each one of media types. However, fundamentally Point to Point Protocol (PPP) has emerged as predominant solution for accessing broadband networks, and has generated wider acceptability among service providers. This paper discusses broadband network architecture and how PPP fits in overall scheme of things in broadband access network. Further various PPP protocol extensions over Ethernet (PPPOE), ATM (PPPOA) and combination (PPPOEOA) have been individually discussed in the context of their use cases

• Publication Date: 17-Jun-2012
• DOI: 10.15224/978-981-07-2579-2-347
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