基於屬性加密之階層式管理雲端資料系統

A Hierarchical Cloud Data Management System Based on Attribute Encryption Scheme

陳冠宇(Guan-Yu Che)

指導教授 ： 楊伏夷

朝陽科技大學/資訊學院/資訊工程系/碩士(2014年)

摘要

近年來，由於網際網路的快速發展和個人行動裝置的普及化，使人們在日常生活中更加便利，利用雲端伺服器存取資料也日漸普遍，人們只需要隨身攜帶可連網路的行動裝置，即可隨時隨地上傳或下載資料，但資料的安全和隱私也非常值得探討，因為使用者並不了解雲端儲存伺服器的提供商是如何處理這些資料，假設資料遭到竊取或是竄改，對使用者的隱私會造成很大的影響，我們提出一個分享企業內部資料的雲端加密系統，使用者上傳的資料以密文方式呈現，並透過屬性加密的特性，達到使用者的便利性，同時也減少產生密文的計算成本和通訊成本。

關鍵字

屬性加密 ； 雲端儲存伺服器 ； 密文

並列摘要

In recent years, due to the popularity of the rapid development of Internet and personal mobile devices, the use of cloud server for data access is becoming increasingly popular; people can be easily connected to a network and perform data upload or download by using their own smart phones. However, data security and privacy are now challenging issues. It is because the fact that users do not understand how cloud server providers protect these data. Assuming that the data was stolen or tampered with, the user's privacy will be greatly impacted. In this thesis, we proposed the hierarchical cloud data management system based on attribute encryption scheme. It is designed to share data among users with the designated attributes. Thus user designates decryptors while uploading encrypted data. The proposed scheme reduces the computational costs and communication costs because the ciphertext is per attribute rather than per user.

並列關鍵字

Attribute encryption ； Cloud Storage Server ； Ciphertext

參考文獻

[5] R. Rajan, “Efficient and privacy preserving multi user keyword search for cloud storage services,” International Journal of Advanced Technology & Engineering Research (IJATER), vol. 2, no. 4, pp.2520-3536, 2012.

[1] Vic (J.R.) Winkler, Cloud Computing Architecture, Securing the Cloud, 2011, pp. 29-53.

[4] J.J Hwang, H.K Chuang, Y.C Hsu, C.H Wu, “A Business Model for Cloud Computing Based on a Separate Encryption and Decryption Service,” International Conference on Information Science and Applications (ICISA) , pp. 1-7, 2011.

[8] R. Rivest, “The MD5 message digest algorithm,” RFC 1321, 1992.

[9] NIST FIPS PUB 180, “Secure hash standard,” National Institute of Standards and Technology, U.S. Department of Commerce, DRAFT, 1993.