How to get authorization on the site using EDS?

Question

PHP

There is a third party site. There are 2 types of authorization on the site, the usual one - login-password and authorization via EDS.
I did the usual one, I log in calmly through curl, save cookies.
I want to figure out how to implement authorization by EDS. I analyzed the request in the browser, and I see that 2 parameters are passed as a hash. Honestly, I don't know much about this topic (I want to understand). I assumed that this is the imprint of the public key and the attestation center.
Probably I did not give a complete picture, so I am ready to supplement the necessary information on request.
Tell me where to start? I have an EDS key, what needs to be done next in order to implement authorization by EDS, in which direction to dig. I am faced with this issue for the first time and there is no understanding of how EDS authorization works in general.

Answer 1

If it concerns the Russian EDS, then most likely it is a qualified EDS, most often it works through cryptopro
cpdn.cryptopro.ru/content/cades/phpcades.html
Maybe for the openssl company. Never did this myself.
I think that you will need to carefully look at the JS on the site and proceed in a similar way.
How will you get access to the EDS is also an interesting question.

Answer 2

I remember in Inkscape I edited a png file and saved it to svg, and the added animation was displayed correctly in the browser) free program