When it comes to SSL safety, one most important point to remember while making contrast in between different kinds of SSL Certificates is the level of protection used. Nonetheless 128 little bit file encryption is what Sector criterion is. Also 256 little bit comparison is available for a raised fee and also some companies even provide 58 little bit encryption making it cheaper. The logic is that greater the security number, the better you obtain the safety.
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broadly there are two reasons why as the certificates exist that's encryption and identification so I'm going to go into encryption and finding out why we encrypt things and what good it does and how that encryption actually works on your computer and on the web server and they're going to go into identification and that's how your web browser can trust what computer is on the other end okay okay now like I said there's two facets to
why SSL exists that's encryption and identification now encryption is basically hiding what's sent from one computer to another by changing the content so it's like speaking in a code I don't know what do you remember Pig Latin or Morse code well these are all examples of code but the code we use to encrypt our communication between two computers is obviously a lot more complex than that because we don't it to be cracked easily there's
also identification now how can you trust what computers on the other hand how can you trust the computer on the other end is the computer you think it is and we'll go into both of these first we're gonna cover encryption okay now typically if you're going to send your credit card details to a server over the web here we can see your computer on the left the server on the right we want
to send the credit card details so they go across now without SSR this information can be grabbed by another computer we see here on the bottom so if you don't use SSL any computer on any of the networks between you and the web server can get your details that you send over so SSL aims to put a barrier around that so that when you when this other computer looks at it it will
just see garbage okay so let's take an example at Google's Gmail service will encrypt using SSL the username and password you send it to now how do we know this if you look at the HTML behind the page you see that when it submits the login details the action in the HTML code begins with HTTPS so that's indicating that it wants to submit the form securely now once you press submit there's several steps
before the actual encrypted data is sent this is called the handshake number one the computers agree on how to encrypt the data between them number two the server sends a certificate containing details about itself and a key to encrypt the data number three your computer says start encrypting for the server says start encrypting now all messages are encrypted so what I'm going to do I'm gonna take you through each one of these five steps
explains in detail how that works now the first part of the SSL handshake has the computers agreeing on how to encrypt with each other first the client computer on the left here sends a hello message to the server here shown on the...
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