SSL stands for secure socket layer protocol. Netscape firstly designed this protocol for secure transaction. In the beginning, it was only used between the web servers and browsers. In this protocol, a third party is involved, which is called Certificate Authority (CA). This third party makes out the both end transactions. You have to buy IIS SSL certificate in order to secure your site. When you host a site, ensure that you are hosting your site on secure Server Hosting. There are many companies that provide cheap SSL certificates but the Richmond SSL certificates are considered best all over the world.
Private Key and public key are the two main points, which ensure the data encryption. The data is encrypted by using one key and decrypted by using another key. In digital SSL certificate, the data can only be decrypted with the private key. The public key is distributed to everyone so that everyone can encrypt the data. But the private key is kept in secret so that only you can decrypt the data. The data you will encrypt will only be correctly decrypted with the help of a public key. To know the public key of your opponent, your correspondent will send you a message, which contains the public key along with the certificate.
How do you know that you are dealing with the right person or rather the right website? To ensure this the certificate authority keep all the information of the users such as the name of an owner, the e-mail ID, the use of the certificate, duration of the certificate, and other necessary information. This certificate does not hold the private key; this key does not transfer in any situation. This certificate contains all the information and encrypted message when it is received by the owner. The owner then decrypts this message by using a private key.
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