SSL is a modern InterNet safety standard, whose reports were developed by Netscape. SSL reports support the certification format X.509, whose principal purposes are on the one hand the Authentifikation with one another communicating of the stations and on the other hand the guarantee of the privacy of the data. By Authentifikation of the participants one understands a guaranteeing of the identity of the parties, thus that examines whether the data from the person also really comes, who is to have dispatched these. This is ensured by a certificate in such a way specified of a "Certification Authority" (CA), a recognized authentication place.

In order to guarantee the privacy of the data, both parties before data exchange agree on a common key, with which all datas will be encode before transport becomes. Thus it is to be excluded that data on your way are read of third or changed.

SSL made possible safe communication between the Web Browser (= Client) and the server. A communication channel between the Web Browser and the server is developed by the use of SSL, which prevent the penetration of a third one. If this connection is once developed, then protection-needy information can, how credit card numbers will transfer, without access from unauthorized ones.