Peer-to-peer systems become a promising alternative for traditional server-client system to providing video streaming; the topology is the one of most important part of these systems. This paper talking about the simple concept of topology in p2p live video streaming and presents a review for p2p live video streaming topology, in this paper three main types of topology that most used in p2p live video streaming systems has been discussed and shows their strength and weakness for each one of them, beside briefing for 18 studies tried to hybrid between two of the main types or using some artificial intelligence tools to improve topology performance.
General TermsComputer Network, peer-to-peer.
Protecting the private information from third party became an important issue in computer science nowadays; cryptography is a science of encryption and decryption information. The first use of cryptography was in ciphering text messages, with the developing of computer usage; other type of files has been appeared such as: picture, audio, video, etc. These types of files can carry private information that needs to be saved from the third part. This paper based on design and implement system for auto encryption/decryption binary files by adapting well-knownVigenère encryption methods, by converting binary files to stream of bytes and encrypting each byte of this stream. The result shows the complete auto protection for the binary files.
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