| INFORMATION SECURITY |
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Method for sensitive data protection of web servers in the cloud |
| HAN Xinhui, WANG Dongqi, CHEN Zhaofeng, ZHANG Huilin |
| Institute of Computer Science & Technology, Peking University, Beijing 100871, China |
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Abstract A sensitive data protection method (SDPM) for web servers in the cloud was proposed to prevent sensitive data leakage from the compromised web servers, which utilizes the features of virtualization and combines the concepts of data encryption and execution isolation. By predetermining and fixing a small amount of application codes that will compute over sensitive data, and by encrypting sensitive data before these data are available to the rest of untrusted codes, the SDPM provides strong defense against all malicious codes that an attacker may run in the server software stack. The SDPM was implemented based on the kernel of Xen Hypervisor and PHP. The results show that the amount of sensitive codes is small with a percentage of less than 2% and the overhead of protecting sensitive data is moderate with a percentage of less than 40% according to six popular web applications in this paper.
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| Keywords
data protection
server
trusted computing
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Issue Date: 15 January 2016
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2016,
Vol. 56
