| 若干新型数据库隐蔽信道应用场景研究 |
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| 作者姓名： | 田雪 徐震 陈驰 |
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| 作者单位： | 中国科学院信息工程研究所信息安全国家重点实验室, 北京 100093 |
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| 基金项目： | 国家自然科学基金(61003228)、新疆维吾尔自治区科技计划项目(201230121)和中国科学院先导专项课题(XDA06010701)资助 |
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| 摘 要： | 针对隐蔽信道威胁高安全等级数据库系统机密性的问题,从隐蔽信道实现场景入手,总结归纳数据库系统中已知的隐蔽信道. 通过提出新型的数据库隐蔽信道分类方法,对隐蔽信道的形成机制进行研究,首次提出几类新发现的数据库隐蔽信道. 此外,在基于不同DBMS的数据库系统中实际构建典型的隐蔽信道,并对其进行对比分析,标识出实现缺陷所导致隐蔽信道存在的可能性.
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| 关 键 词： | 隐蔽信道 高安全等级数据库 存储隐蔽信道 时间隐蔽信道 |
| 收稿时间： | 2012-04-24 |
| 修稿时间： | 2012-06-20 |
Study on usage scenarios of several new database covert channels |
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| Authors: | TIAN Xue XU Zhen CHEN Chi |
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| Institution: | State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100093, China |
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| Abstract: | Covert channel poses a threat to the confidentiality of high-level security databases. We study and summarize existing database covert channels based on the scenarios of use and propose a new method to classify database covert channels and to study their formation mechanisms. We propose several new constructing methods of database covert channels. In databases based on different DBMS we construct typical covert channels in real. The results of the comparative analysis show the possibility of the presentence of covert channels which are caused by the implementation defect. |
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| Keywords: | covert channel high-level security database covert storage channel covert timing channel |
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