Secure Socket Layer

SSL is one of the methods of encryption in data communication made by the Netscape Communication Corporation. As described in the SSL Protocol, Internet Draft (The SSL Protocol, Version 3.0 by ALAN PAUL O. Freier, and C. KOCHER, you can open in http://home.netscape.com/eng/ssl3/ssl-toc.html.

SSL is a protocol layer. In each layer, data consists of a long description and content. SSL is sent to retrieve the data, solved into blocks that regularly, then compressed, if necessary, apply the MAC, encrypted, and the results are sent. At the destination, the data encrypted, verification, compressed, and ordered back. The results are sent to the client on top of it. (free translation).

SSL encrypted only data that is sent via http. How SSL can be described as running the following:

• When the connection starts running, the client and server to create and exchange a secret key, used to encrypt the data to be communicated. Although the session between the client and server diintip other parties, but the data looks difficult to read because it is encrypted.
  
• SSL support public key cryptography, so the server can perform the authentication method that is known as RSA public and Digital Signature Standard (DSS).
  
• SSL can verify the integrity of the session is running by using the digest algorithm such as MD5 and SHA. This is a session avoid piracy.