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Heap overflow is one of the most widely exploited vulnerabilities, with a large number of heap overflow instances reported every year. It is important to decide whether a crash caused by heap overflow can be turned into an exploit. Efficient and effective assessment of exploitability of crashes facilitates to identify severe vulnerabilities and thus prioritize resources. In this paper, we propose...
Location-based messaging applications (LMAs), a kind of messaging applications for mobile devices which enable users to connect with people based on their geographical locations, have recently experienced a huge popularity growth. The killer feature in LMAs that embodies the concept of geo-based instant messaging, named people nearby, allows users at any place to search and communicate with other...
Traditional access control solutions suffer from difficulties in access rights authorization and usage policy enforcement, especially in highly distributed environments. The layered nature of common digital content should also be exploited to efficiently provide the user with choices over digital content layers. This paper presents a layered access control architecture L-UCON based on usage control...
Digital rights management (DRM) is the technological solution to control the distribution and usage of digital assets. However, existing solutions are vulnerable to various attacks in the context where the consumer can control the platform totally. To improve the security of DRM solutions the paper proposes a secure DRM architecture based on TPM which is called TBDRM. It ensures that content is always...
Static analysis is one of the most popular approaches of software analysis. As more and more software protects their code by transformation or encryption, then releases them at runtime dynamically, it is hard to statically analyze these protected executables because of the failure of disassembling. In this paper, we propose a novel and general technique to reconstruct binary files for static analysis...
Niederreiter showed that there is a class of periodic sequences which possess large linear complexity and large k-error linear complexity simultaneously. This result disproved the conjecture that there exists a trade-off between the linear complexity and the k-error linear complexity of a periodic sequence by Ding By considering the orders of the divisors of xN-1 over \BBFq, we obtain three main...
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