Is it possible to sign all EDS requests on the server?

Question

PHP

Is it possible on the server using PHP or javascript (Node.JS) to sign the digital signature for each call to the site?
It is necessary to establish the receipt of information from one of the state. sites, but authorization and some requests require a digital signature when accessing them.

Answer 1

Can. But it depends on one of the factors:
There are a lot of EDS algorithms, and it all depends on the one you need.