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Security on mobile devices is becoming increasingly important. HTML5 are widely used to develop mobile applications due to its portability on multi platforms. However it is allowed to mix data and code together in web technology. HTML5-based applications are prone to suffer from code injection attacks that are similar to XSS. In this paper, at first, we introduce a more hidden type of code injection...
With the development of digital signal processing (DSP) processors, the design of retarget able C compiler is necessary. But the C compiler for media processors which is built by porting GCC can't generate effective complex instructions in its way of matching instruction pattern. So according to the features in architecture of RISC-DSP processor designed by us, this paper proposes implementing instruction...
In a practical wireless network, the coding opportunities may be reduced by limited decoding buffers. In this paper, we introduce a new scheme called decoding buffer management (DBM) in practical wireless network coding. The DBM is composed of two parts named respectively decoding buffer filtering and packet information distributing. By decoding buffer filtering, the packets invaluable for future...
Undoubtedly, peer-to-Peer (P2P) technology is an effectively method for delivering streaming media content over the internet. However, current P2P stream systems also suffer many problems, such as huge bandwidth consumption, less effective in heterogeneous environment, protection of important data, etc. Scalable video coding (SVC), as an extension of H.264/AVC standard, has attracted many researchers...
In space communications, some information is more important than others so that it necessitates a unequal error protection (UEP) to provide priority encoding transmission in limited channel capacity. Expanding Window Fountain (EWF) codes is a promising packet level FEC scheme for UEP. However, due to inherit from Fountain codes, its performance becomes very poor when source block size is small. In...
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