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Control flow matching methods have been utilized to detect malware variants. However, as the number of malware variants has soared, it has become harder and harder to detect all malware variants while maintaining high accuracy. Even though many researchers have proposed control flow matching methods, there is still a trade-off between accuracy and performance. To solve this trade-off, we designed...
As full duplex radio communication is introduced, it is expected to double the throughput theoretically over full duplex radio for one-to-one communication. However, in the practical environment, it is hard to find such an application that demands the same amount of traffic in the both directions at the same time. To enhance the throughput as much as possible, we need to arrange medium accesses in...
While a NUMA system is being widely used as a target machine for virtualization, each data access request produced by a virtual machine (VM) on the NUMA system may have a different access time depending on not only remote access condition, but also shared resource contentions. Mainly due to this, each VM running on the NUMA system will have irregular data access performance at different times. Because...
While adopting cache in software RAID brings performance benefit, it can cause data loss at power failure which results in the broken filesystem consistency. Though I/O Barrier can be used to remove the consistency issue, it sacrifices the write performance of software RAID. To mitigate this tradeoff, we suggest R-Barrier for software RAID. The basic idea of R-Barrier is to avoid the synchronization...
Main memory as a hybrid between DRAM and nonvolatile memory is rapidly considered as a basic building block of computing systems. Despite widely-performed researches no one can confirm whether hybrid memory is at its full performance in terms of energy consumption, time delay or both. The main problem is that evaluating their performance in comparison with the optimal performance is challenging since...
Cloud storage system is becoming the substantial component of the cloud system due to emerging trend of user data. Different from other computing resources, storage resource is vulnerable to the cost issue since the data should be maintained during the downtime. In this paper, we investigate the benefit and overhead when deduplication techniques are adopted to the cloud storage system. From the result,...
Providing secure and efficient outsourced storage is a precursor to widespread cloud deployment and availability. For this purpose, existing designs mainly rely on block ciphers, although stream ciphers are more computationally-efficient than block ciphers. This paper presents a construction of secure storage, BLAST, enhanced with a stream cipher rather than a block cipher with a novel block accessible...
Everyone has physiological preference regarding micro-climate conditions such as temperature, humidity and illumination, therefore, personalized micro-climate control could certainly enhance human comfort level in building interior space. 25% of the total national energy consumption is related with buildings, so reducing building operation energy is also necessary. Consequently, innovative sensing...
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