Everybody welcome to the next video.
In this video we're going or MDT five so five or Mrs. digest five is a is another hash is a hashing
algorithm or a hashing function.
Now this is commonly used to verify the contents of some data.
As I said in the previous video whether it's you download a file you can compare hash that they have
on their site versus what you currently have.
There's a lot of applications that provide the empty five sometimes are windows right click and properties.
We'll show you an empty five version of that or you can pass the data or the file into empty five program.
Now it is not commonly used for authentication checks anymore.
More how I mentioned that an application will hash a password.
In the past there used to be empty five used for that nowadays because of some attacks that have happened
against me five is no longer secure enough to be able to hold passwords hashed securely.
So you're not going to see empty five used in that way any longer.
However you will still used it be using it in a variety of ways such as you know like I said the forensics
example there's don't use empty five in some places they and they might use Sha which we're going to
go over next video.
However MDG 5 is commonly used just just to verify content.
At this point nothing sensitive per say but just content.
In a nutshell.
Now how does it work.
It provides an output of a message Digest which is the result of a hashing function of 128 bits long
so it will always provide the data in a whatever you provide it.
So if you provide a gig worth of data it's still going to only produce you 128 bits of data that you
use to validate it and it's going to be unique data no matter how big of a message digest you or a amount
of data you send it.
Now it's important to note that this process is data and five hundred and twelve blocks similar to how
a block site for works.
It's doing it 512 bits at a time each block is broken down into 16 words which is composed of 32 bits
each.
That's as far as as far as deep as I'm going to go with explaining MDG 5 above the video I will provide
a link to to show you a little bit more about how it works behind the scenes but understanding what
MDG 5 is used for is a very important concept here.