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In the Software-defined networking (SDN), when multiple control domains are used in control services, the transient state problem can occur causing the service flow interruption when border switches are updated asynchronously. We analyze the uniqueness of this problem for SDN, and propose a light-weight protocol for safe reconfiguration of the border switches in order to improve the availability of...
After over forty years' development in an extraordinary speed, the Internet is confronting profoundly different social and economic environments, with the continuously increasing users demands. However, the essence and key designs of the current Internet have remained untouched during the past decades. Over the same years, Internet users have been calling for a better Internet that features significantly...
The conventional SVD-based watermarking has been proved to be flawed by protocol attacks. An image watermarking algorithm is proposed based on media hash. Instead of using randomly Gaussian sequence as watermark, a meaningful text message modulated by media hash sequence is used. Theoretical analysis results show that the proposed algorithm solves the problem of protocol attack, while keeping all...
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