Earticle

초록

영어

With the growing popularity of outsourced databases (ODBs), access control for multiple users with different privileges in outsourced environments is required in more and more applications. Under the assumption that ODBs may be interested in the original data value, or delay the update operations when end users cannot verify the results, this paper attempts to enhance ODBs with finegrained access control for multiple users with less impact on their other functionalities. Our work can be divided into two parts. In the first part, we propose a method to enforce the access control rules by encrypting the original table and using the keys to distinguish various rights. In addition to read/non-read rights, read/update rights can be distinguished in our encrypted table. We also implement validation-only rights for ODBs and oblige them to fulfill any update validation without knowing the original data. In the second part, we study the query evaluation over the encrypted table. Two kinds of B+ tree indexes on each column are designed, which can accelerate the selection in ODBs.

목차

Abstract
 1. Introduction
 2. Preliminary Knowledge
  2.1. Access Control Rules
  2.2. Attack Model
  2.3. Framework of Access Control
 3. Enforcement of Access Control Rules
  3.1. Encrypted Cell for Multiple Users
  3.2. Cells Grouping and Partition
  3.3. Encrypted Table
 4. Query Evaluation
  4.1. Basic Method to Evaluate Query
  4.2. EVT and IT Index over Encrypted Table
 5. Related Work
 6. Conclusion
 Acknowledgements
 References

키워드

저자

• Lanju Kong [ School of Computer Science and Technology, Shandong University ]
• Qingzhong Li [ School of Computer Science and Technology, Shandong University ]
• Lin Li [ School of Computer Science and Technology, Shandong University ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Database Theory and Application

• 간기

  격월간

• pISSN

  2005-4270

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605