In the previous sections we learned a number of methods to send and receive data privately and anonymously.
This data can be simple text or it can be files such as an image a PDA f a document and so on.
All of these methods used end to end encryption so if the data gets intercepted by any entity the data
will be useless to this entity because it'll be simply gibberish and it'll only be decrypted once it's
received by the person that we want them to receive it.
This is all great but first of all we have to trust that these methods of communication are implementing
the encryption properly that there are no problems or no flaws in the way that they're encrypting and
decrypting the data.
And what if we wanted to send data through a website or through a form of communication that does not
support encryption.
In this case you'll have to manually encrypt your data and the person that receives the data have to
manually decrypted because this is very important.
I decided to make a full section on encryption in this course so in the section first of all we're going
to learn about asymmetric and symmetric encryption.
You're going to learn how it works and why we prefer to use end to end encryption.
Then I'm going to teach you how to manually encrypt your data again whether it's text or file such as
a PDA or a document or a song.
You'll also learn how to decrypt this data once you receive it.
You'll learn how to sign this data.
So when a person receives this data they can confirm that it was actually sent by you and not by someone
else and you'll also learn how to verify the signatures and integrity of the files and of data that
you receive so that you know that this wasn't played with us it was sent to you it wasn't tampered with
and to make sure that it was actually sent from the sender and not someone else.
So you can use this as another layer of encryption on top of the other methods.
So even if you're using a method that supports encryption you can manually encrypt and decrypt the data
just to make sure that your files or your data is as private as possible and you can use this like I
said to send files and to send data using unsecured methods of communication even use a normal post
and you'll know if this data gets intercepted It's still secure and is still private because whoever
intercepts it will not be able to read it because it will be encrypted and it will be gibberish.