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SMS4 is the first official released commercial cryptographic algorithm. It provides unified standards for designing and using local area wireless network product. The general DPA attack is not suitable for SMS4 owing to the ample random diffusion of the round output. This article proposed a new power analysis method for SMS4 to reduce the diffusion by chosen plaintext. Two means - Hamming distance...
Value-at-Risk (VaR) and Conditional Value-at-Risk (CVaR) are two of the most widely used and important risk measures in financial risk management models. Because VaR and CVaR portfolio optimization models are often nonlinear and non-convex optimization models, traditional optimization methods usually can not get their global optimal solutions, instead, they often get a local optimal solution. In this...
There are some problems in the video identity recognition, such as low efficiency of data processing and instability of the identification performance. This paper designs specific links and the corresponding processes for the interested character recognition and scene tracking, which are including the construction of adaptive segmentation, video face flexible recognition, feature library model, optimizing...
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