How to make an SSL signature for the https protocol?

Question

Digital certificates

Sberbank and github and other major projects have one, but how can one get or make one?

Answer 1

https://ssl.comodo.com/buy-ssl/select-ssl.php?ssl=...
In short, I found EV SSL and it's quite expensive.

Answer 2

Here I collected all the information on certificates and https

Answer 3

Are you sure that's what you saw?
public class @Class
Look, I know two use cases
1. Ignoring escape characters. For example, to write a path in the file system, you need to write directories separated by "\\" because if you write "\", the compiler will decide that there will now be an escaped character in the string.
Or you can put @ and the compiler will not wait for escaped characters
2. Razor. An engine developed by small-softs for front-end rendering in web development (see ASP.NET MVC 4)

@using (Html.BeginForm(«action», «controller»))
{
 //html form
}

Neither one nor the other is suitable for this case (public class @Class)

Answer 4

For example, the word class is reserved, so it is supplemented with the allowed @ symbol in names.
And it is already possible to declare names such as: @class, @params, @const, etc.