Secure Channels

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The Internet is an insecure channel for message transmission. Unlike in the case of voice transmission, where the message passes through a specified path, in the case of Internet, the message passes through several network routers before reaching the destination. Moreover, the path of flow of the information packets can be altered using a dynamic routing algorithm. The packets that pass through the network can be viewed by anyone. Hence, the Internet is certainly not suitable for transferring confidential or classified information.

To ensure privacy of information, both the client and the server must run compatible security schemes. Network interactions typically take place between a client, such as a browser software running on a personal computer, and a server, such as the software and hardware used to host a website. Here, authentication is used for identifying the clients as well as the server in a network environment. For instance, client authentication refers to the identification of a client by a server (that is, identification of the person assumed to be using the client software). Server authentication refers to the identification of a server by a client (that is, identification of the organization assumed to be responsible for the server at a particular network address). The technologies used to provide secure channel over the web are Secure Socket Layer (SSL) and S-HTTP.



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