Mian Cai

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The rapid detection of Staphylococcus aureus bacteremia and a swift determination of methicillin susceptibility has serious clinical implications affecting patient mortality. This study evaluated the StaphSR assay (BD GeneOhm, San Diego, CA), a real-time PCR assay, for the identification and differentiation of methicillin-susceptible S. aureus (MSSA) and(More)
H.264 video coding standard supports a broad range of application, and how to guarantee its security has already become an urgent problem. In this paper, we propose a video encryption algorithm for H.264, which combines stream cipher algorithm with entropy coding process. It obtains video content security by encrypting codeword index to scramble the(More)
A novel type of proxy signature, multiple grade blind proxy signature, is proposed for the first time. It has the properties of both blind proxy signature and multiple grade proxy signature. Then the multiple grade blind proxy signature scheme is proposed based on the intractability of the discrete logarithm. The scheme not only keeps blind proxy for each(More)
With the development and application of H.264 standard, the technology of H.264-based video data security becomes increasingly important. This paper proposes a new selective encryption scheme based on H.264, it combines the AES OFB mode with the sign encryption algorithm, and encrypts DCs and parts of ACs respectively. This method not only keeps advantages(More)
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