Kyungsoo Kwag

Web2Animation - Automatic Generation of 3D Animation from the Web Text

In this paper, we introduce an animation production system, which generates a story from the web text in a specific domain and presents it in 3D animation. With our approach, 3D animation is generated in real-time from a web recipe in natural language. As a user starts the animation, only domain related texts are extracted using their associated tags and their semantics are analyzed by a semantic parser. The results of this semantic analysis are mapped to the computer animation commands through the action generation algorithms. To infer the hidden context within the text, we designed and leveraged the recipe ontology. A set of XML schemas has been designed to store different representations for web recipes; from the natural language representation to the animation representation.

S-OpenSGX: A system-level platform for exploring SGX enclave-based computing

Abstract Intel recently introduced Software Guard Extensions (SGX) to enable applications to protect their selected code and data from privileged platform software. As it draws wider attention from the security research community, an open-source emulator for SGX (OpenSGX) has been developed to allow researchers to explore the SGX environment. To the best of our knowledge, OpenSGX is currently the only publicly available SGX emulation platform; however, its system-level support is largely limited owing to its user-mode emulation. In particular, experiments that require system functionalities or device emulation cannot be conducted with the current OpenSGX. To solve this problem, we propose System-OpenSGX (S-OpenSGX), which leverages QEMUs system emulation to provide researchers with full system-level support for exploring SGX enclave-based programming. In this paper, we show the design of S-OpenSGX, including system functionalities such as scheduling, multithreading, page table handling, and SGX paging. Non-trivial issues derived from the difference between user-mode and system emulation, and our approaches to addressing them are also described. Lastly, we utilize S-OpenSGX to experiment with a new mitigation method against the data leaking attack on enclave threads and an APIC (Advanced Programmable Interrupt Controller) device modification to reduce SGXs mode switch overhead.