| Publisher | Association for Computing Machinery | ||
|---|---|---|---|
| Format | 271.4KB PDF | Date added | 30 Jan 2007 |
| Topics | Data Recovery - Security, Security Management, XML | ||
| Downloads | 0 | ||
Some promising recent schemes for XML access control employ encryption for implementing security policies on published data, avoiding data duplication. This paper studies one such scheme, due to Miklau and Suciu. That scheme was introduced with some intuitive explanations and goals, but without precise definitions and guarantees for the use of cryptography (specifically, symmetric encryption and secret sharing). This gap is bridged in the present work. This paper analyzes the scheme in the context of the rigorous models of modern cryptography. The authors obtain formal results in simple, symbolic terms close to the vocabulary of Miklau and Suciu. They also obtain more detailed computational results that establish security against probabilistic polynomial-time adversaries.
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