Advantages
Share uses encryption to hide the identity of who is transferring or what they are transferring. It is non-centralized so it cannot be easily shut down and it supports multiple source "swarm" downloading. All files are transferred encrypted so they must be decrypted upon download completion. In the meantime they are stored in encrypted form in a "Cache" folder. This folder is also used to allow recently downloaded files to be shared among the network based on priorities.
Share also features a plugin system. The plugins and PDK are readily available through the Share network. The PDK is written in Delphi.
Unlike Winny, Share allows users to specify up to 255 Cluster Keywords, though only 5 can be active at once (Winny only allowed 3 cluster words, and its system was more confusing). These are used to connect to nodes that have also specified the same Cluster Keywords. This allows users to maintain connections with nodes that are sharing files they might be interested in, while disconnecting from nodes that share content they are not concerned about.
Users can specify auto-download triggers and auto-block filters. The network also appears to have some sort of a "forgery warning" system to warn people about possible falsified data/files.
Like Winny, Share uses Trip IDs to verify the identity of a person sharing a file. A Trip is a sort of encrypted key that identifies a person is who they say they are. This allows users to decide whether or not they trust a person based on their previous sharing experience with them.
When a new version of Share becomes available, users are given a notice in the Share statusbar. When this happens, users can search for the new version on the Share network and download it from a reliable source based on Trip. This internal method of distribution makes it hard to find a copy of the software outside of the (presumed safely anonymous) Share network, since offering this software publicly could lead to unwanted attention from law enforcement agencies.
Read more about this topic: Share (P2P)
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