Original subtitles

In this lecture I'm going to show you how to verify and install the teller browser on a Linux computer.

If you have a Windows or an Apple OS X system then please go back to the previous lectures where I show

how to do this in details for these operating systems only watch this lecture.

If you want to learn how to install the Tor browser on Linux otherwise skip it and you won't lose any

information.

You can continue from the next lecture where I'm gonna show you how to use detailed browser.

So the instructions that I'm gonna show you right now will work on most Linux this throws like fedora.

Debian and KDE but I'm going to do it from your wound too because this is the most popular one so the

first thing that you want to do is go to the tour browser download page that I have right here and I'm

going to include its links in the resources of this lecture.

You want to scroll down to where you have the downloads for all the operating systems and this time

we want to install it on Linux so I'm gonna go here to the right where it says Linux and I'm gonna download

the first one because this is the English version.

Now I have the 64 bit computer so I'm going to click on the 64 bits and this will allow me to download

the third version for Linux for 64 bit computers I've already downloaded this right here.

As you can see in my downloads so I'm going to cancel this and once you have downloaded all you have

to do is really extracted and run the binary that will run the browser for you.

But before doing this it's a really good idea to verify that the file that we just downloaded right

here has not been modified as it was being downloaded.

Because when you download something from the internet it passes through a number of nodes and it can

actually be modified by your Internet service provider by your network admin or even by hackers.

If they manage to intercept the connection.

So what I want to do right now is verify that the file that I just downloaded did not get modify as

it was being downloaded from the tower Web site to do this.

We're going to use a signature file provided by toward developers.

So as you can see on this page each download has a sig this sig stands for signature.

And this is a file that is unique to this download to the installer.

It was generated by the developers when they packaged the installer and it can be used to verify that

the installer did not get modified since it was packaged by the developers.

So to verify the installer the first step is to download its signature.

So like I said as you can see each file has its own signature.

I downloaded this file right here so I'm going to download this signature and here I'm going to right

click the signature save link us to save it.

And I'm going to choose where I want to download it and I'm going to keep it in my downloads so I'm

going to click on Save and as you can see I have it right here that has a dot a C extension.

Now before we can use this file to verify the installer we need to import the key of the Tor developers.

So yeah we're gonna go to the TOR verify page and this is the key of the third developers right here.

So what we're going to do is we're going to import this key using the GPL command.

We're saying that we want to import a key from this server.

And we're giving it the server that we want to get the key from.

And then we're using the receive key argument to receive this particular key.

So I'm literally going to copy this command and paste it here.

And when you run this command give it some time and might actually take up to a minute or two and it

might fail once or twice.

So keep trying it until it works.

The reason why it might fail is because maybe at the time of you trying this command these servers would

be under a lot of pressure but as you can see it works for me in a relatively short period of time and

I managed to import the key.

As you can see in here.

So now we can actually go ahead and verify the installer but before I do this I want them double check

and make sure that I imported the correct key so to do this I'm going to use the G.P.S. command again

and I'm going to say I want to get the fingerprint

of the key that I just imported.

So the fingerprint of this key right here again I'm gonna copy it.

Paste it here.

This command will give me the fingerprint of the key.

And we're going to compare this to the fingerprints that we have in here and as you can see they're

identical.

And because they are identical.

This means that we have imported the correct key.

So the last step now is to use the signature file that we downloaded right here to verify and make sure

that this installer did not get modified so before we can do that we'll need to first navigate to where

the installer and the key file are stored.

And as you can see they're stored in my downloads directory.

So right now if I do Pete WD on my terminal you'll see I'm in Holmes Zaid so I'll need to go to downloads.

So I'm going to do C.D. downloads and now if I do Pete WD to get my working directory you can see I'm

in home Z downloads and if I do l s to list all of the files and directories in the current working

directory you'll see I have these two files right here which are the same files that I have in here.

So right now I'm basically in the downloads using my terminal.

So all I have to do right now is verify this signature.

So we're going to say gee PGE again the same command that we've been running and we're going to say

I want to verify and give it the name of my signature file which is this file right here

I'm going to hit enter on perfect as you can see it's telling us that this is a good signature from

the Torah browser developers.

So basically what this means is it means that this signature right here the Torah browser package that

we just downloaded right here has not been modified ever since.

This signature was made and we know that this signature is valid because we got the signature from the

third download page and we also validated the toward developer key is using the instructions from here

so we can ignore the warning here.

The warning here literally just saying that G is not able to validate the signature creator so it wasn't

able to validate the creators of tau but we know that these signatures are valid because we verified

their key with the instructions that we saw in here and we validated the signature that we got from

their web page.

So now that we are happy that this package has not been modified ever since it was packaged by the third

developers we can go ahead and uncompressed it.

So I'm gonna right click it extract here and we have the package content right here and if we navigate

inside this we have the browser and this is the binary that you want to run in order to run the browser.

So I'm going to go back to my terminal right here.

I'm going to clear the screen and keep in mind in my terminal if I do P.W. deep already in my downloads

directory.

So if I do Elyse you'll see the directory that was just created when we uncompressed the package so

we can navigate into this by doing C D Tor Browser Linux the whole thing you can actually use the top

two autocomplete I'm going to hit enter and I'm inside this directory right here.

The next thing I need to do is to go inside this directory.

So again if I do less you'll see we have one directory in here.

So we're going to do see the Tor Browser E and U S again.

If I do allows it to list all the files and directories and similar to what you see in here we have

the browser on the start tor browser the desktop.

Note that this right here is in green.

This means that this is an executable so we can run any executable in Linux by doing that forward slash

followed by the executable name which is start tor browser the desktop.

I'm going to hit enter to run this executable and this will launch the Utah browser for me as you can

see.

And in order to connect to the tour network all I have to do is just click on Connect here this will

connect to the tour network.

It will configure the browser to send all data through the Tor network.

And as you can see I'll get a Firefox window browser similar to Firefox.

But like I said any Web site that you'll go to through this browser will be loaded over detour network

so that's it for this lecture right now.

We managed to install the Tor browser on linux using a clean and unmodified package.

Don't worry about how to use it or browser and about its settings.

We will talk about that in the next lectures.