The Secure Sockets Layer is a pc networking protocol that handles server authentication, client authentication and protected communication between servers and customers. By submitting your e-mail address, you agree to receive e-mails regarding important issue offers from TechTarget and its partners. SSL runs on the mix of public key and symmetric key cryptography to ensure a connection between two machines, usually a Web or mail server along with a customer machine, communication over the Internet or an internal network. Using the OSI reference model as context, SSL runs above the TCP/IP protocol, which is responsible for the transport and routing of data over a network, and below higher level protocols such as HTTP and IMAP, encrypting the data of network connections in the application layer of the Internet Protocol suite.
The Sockets part of the term pertains to the sockets approach to passing information back and forth between a customer and a server plan in a network, or between plan levels in the same computer. The Transport Layer Security protocol evolved from SSL and has largely superseded it, although the terms SSL or SSL/TLS are still commonly used, SSL is often used to refer to what is actually TLS. The SSL protocol contains two sub protocols: the record protocol along with the Handshake protocol. These protocols permit a customer to authenticate a server along with establish an encrypted SSL link.
In what is referred to as the Initial handshake process, a server that supports SSL provides its digital certification to the customer to authenticate the server identity. Server certificates follow the X.509 certificate format that’s defined by the Public Key Cryptography Standards. The certification process uses public key security to validate the digital certification and make sure a server is just in fact the server it claims to be. After the server continues to be authenticated, the customer along with server establish cipher settings along with a shared key to encrypt the info they exchange throughout the rest of the session. If a web page requires a SSL connection, the URL may change from HTTP to HTTPS along with a padlock icon appears in the browser once the server has been authenticated. The handshake also allows the customer to authenticate itself to the server.
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