Hey everybody welcome to the next video.
So in this video we're going to be going over a s encryption.
Now what does A S H stands for advanced encryption standard.
This is a symmetric based encryption that utilizes a block cipher of different sizes.
So you might commonly see this as a yes 128 one ninety two or 256.
As I said she and as you see in the slide this is how it's you're going to see it listed in other places.
So the 128 192 and 256 are the block size block sizes that allow the cipher.
How does this work.
So the key length is important.
So the symmetric key and that's generated is very important.
And encrypts the data.
The data will be encrypted depending on the size of the key.
So in this case in a s 128 it it'll go and recreate that over and over again for 10 rounds for one ninety
two.
It'll be twelve and 256 will be 14.
Now it's important to understand that this is a block cipher and is commonly used in conjunction with
RSA as we talked about before.
So an example of this would be tell us.
So tell us we'll use a symmetric based encryption.
However it will encrypt the keys with versions of RSA.
So it's important to understand that like I said we're not going to go too deep into the math and how
ever all the substitution and all the math works.
Again there will be a link above the video on what exactly the map is doing behind the scenes.
But understanding the block sizes the types of a s that we have available at the moment is important
to understand.