Hey everybody we're going to the next video.
So in this video we're going to be going over encryption.
Now what does encryption encryption in a nutshell transforms a plain text such as something you type
on a keyboard or a message and turns it into something called cipher text which is normally garbage
as far as the untrained eye is supposed to see.
Now each type of encryption uses something called a cipher.
Now we'll go over a few different types of algorithms that the ciphers are going to use in a second
but most ciphers use a pseudo random generated key for encryption.
Now this doesn't include all of them but we'll hit each one as we go.
Now it's important to understand why this is needed.
It's used to hide sensitive data so it can't be intercepted by anyone but the intended recipient.
So for example when you're using when you're connecting to Google dot com you're using H2 G.P.S. which
is using TRL s as a protocol which does use encryption to hide your data when you're when you're talking
to the web page.
This is why when you log into a bank it's safe to use the bank as long as the HDD PSA at the beginning
because it should be using.
Tell us which in turn uses strong encryption ciphers and algorithms which then brings us to the point
of it's not easy to crack a encryption algorithm.
Now there are ones that have been and ones that have been able to be reversed.
But the point is is it takes a long time and a lot of skill for someone to be able to reverse some of
these.
And it's not something that happens frequently especially with some of the common ones like RSA and
a yes but they keep advancing the length of the keys or the bits for the keys which will go over later
which increases the security that makes it more and more difficult to crack.
So as long as our systems and the machines keep speeding up to be able to process more information and
more data at once we can use stronger encryption as we go because if we use something that's just some
massive encryption algorithm it could take minutes to decrypt what we need done.
And that's just not feasible for a normal day to day operations where you access the website imagine
every request you took took a minute to resolve.
Now we're back to dial up so we don't want to do that.
And this is using a large amount of systems like I said most Web sites use H2 G.P.S. and in turn uses
tell us as a protocol underneath that which relies on encryption.
So it's important understand that a lot of secure communications are going to be using some form of
encryption in some way shape or form.
Now in this particular module we're going to be going over RSA a yes in 3D.
We're not going to get into the math around how each of these work.
So don't don't expect us to be too in-depth each one it's like how exactly everything is calculated
what we're going to do is we're gonna give you a high overview of kind of how RSA works versus a yes
3D OS where they're being used in real world applications.
So just keep that in mind when we go into this I will provide links to some of the mathy stuff above
videos when we hit each one of these for you to do further research.