Information Protection On The Internet. The Report Of Safe Connections (SSL)
Report SSL developed by Netscape Communications, nevertheless, is not the property of firm and is usually used for protection of the data by their transfer on the Internet and the WorldNet. Report SSL is built in the majority of Web browsers, including Netscape Communications and Microsoft Internet Explorer, and also in many other software products. This report functions at network level, between the report Internet TCP/IP and the applied software.
According to standards of the Internet, the message of the sender is transferred to a socket, which interprets the message according to standards TCP/IP. Report TCP/IP (the report of management of transfer / the gateway report) — a standard set of the reports used for communication between computers in the Internet. As a rule, the data is sent to the Internet in the form of a set (probably big) the separate parts of the message named packages. On the side of the sender the message (probably big length) breaks into packages, which are consistently numbered, and to them is added the information protecting from errors of transfer. Report TCP directs packages such routes to avoid transfer delays. As a result separate packages can be transferred on the Internet by various routes. On the side of the addressee of the message after TCP will make sure that all packages have arrived, it places them in a consecutive order and checks integrity of packages and presence in them of changes. If packages have been changed, report TCP/IP will transfer again such packages. Then TCP/IP transfers the message to a socket on the side of the addressee. The socket will transform the message to the form, which is clear to the appendix of the addressee. In the transaction using SSL, sockets are protected by mechanisms of enciphering with an open key.
Report SSL uses technology of enciphering with an open key and digital certificates for an identification of the server participating in transaction, and protection of the information in the course of its transfer from one side to another on channels of the Internet. Transactions of report SSL do not demand identification of the client. In the beginning the client sends the message to a server. The server answers and sends to the client the digital certificate as identification means. Before to continue transaction the client and a server agree concerning session keys. Session keys — the symmetric closed keys — are used only in the given transaction. As soon as keys are chosen, the communication session between the client and a server proceeds, keys of a session and digital certificates are thus used.
Though report SSL protects the information transferred through the Internet, it does not protect the private information, saved on a server of the seller — numbers of credit cards, for example. When the seller obtains the credit card data together with the demand for purchase, the information is deciphered and remains on a server while the demand will not be executed. If the server is not protected also the data are not ciphered, it is possible unapproved access to the private information.
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