An Efficient P2P Based Proxy Patching Scheme for Large Scale VOD Systems

Cast: P2P Patching Scheme for VoD Service

Providing video on demand (VoD) service over the Internet in a scalable way is a challenging problem. In this paper, we propose Cast an architecture that uses a peer-to-peer approach to cooperatively stream video using patching techniques, while only relying on unicast connections among peers. We address the following two key technical issues in Cast: (1) constructing an application overlay app...

An Efficient ID-Based Proxy Signcryption Scheme

Received June 30 th , 2012 Revised July 10 th , 2012 Accepted July 22 th , 2012 Signcryption is a cryptographic primitive that performs encryption and signature in a single logical step, at lower computational cost and communication over heads than the signature-then-encryption. Proxy signcryption schemes are variations of ordinary signcryption schemes and have been useful in many applications ...

A partition-based algorithm for clustering large-scale software systems

Clustering techniques are used to extract the structure of software for understanding, maintaining, and refactoring. In the literature, most of the proposed approaches for software clustering are divided into hierarchical algorithms and search-based techniques. In the former, clustering is a process of merging (splitting) similar (non-similar) clusters. These techniques suffered from the drawba...

An efficient Multi-proxy system for Proxy signature scheme

In the last few years, the traditonal certificate-based setting is replaced by the ID-based setting. Proxy signatures allow the delegation of signing rights from an original user to its proxy agent. Normally, the original signer can authorize a group of proxy agents to sign any document on its behalf. Currently in our study, we have proposed an ID-based multi-proxy signature scheme, from biline...

Analytical Model For Patching VoD Cache Hierarchies