Is there a free solution for integration with cryptoArm?

Question

Cryptography

Good afternoon.
We have a C# service (asp.net web api) that interacts with the payment gateway. Our new supplier requires sending reports through CryptoPro (crypto Arm as I understand it). I am not familiar with CryptoPro products at all, I honestly tried to understand the variety of products on the site, but I still did not understand how we can organize the sending of reports in automatic mode, what we will need to buy and how to continue to live in general.
On the site I found the CryptoPro .NET product ( cryptopro.ru/products/net). Which, according to the description, does everything that is needed (signing and encryption). Please help me with the following questions
1) For which embedding you will have to buy a license?
2) Is this enough to solve the problem (take the generated csv file, sign, encrypt, send by mail)? or additional software is required (like a certificate manager).
3) How to get a certificate in this case? Usually we generate a key, then a certificate follows it, in this case, as I understand it, such a "self-signed version" will not work? how to get and how much does the certificate cost?
4) Are there alternative solutions, such that on the other side CryptoArm correctly decrypts and certifies reports?
Thank you.

Answer 1

CryptoARM is quite an intelligent user product, it does not cost a lot of money.
It is easily integrated into the explorer, after which you can encrypt / decrypt files from the explorer in a few clicks. There is also a CryptoARM SDK, which allows you to embed functionality in your applications.
But CryptoARM is not a development of CryptoPro, you must separately buy CryptoPro CSP for CryptoARM.
By itself, CryptoARM is just a convenient wrapper for crypto functions.
In your own application, you can use only the functions of the Microsoft Crypto API and through it use cryptography from CryptoPro (and any other compatible one) and you do not need CryptoARM.
CryptoPro has a command line utility for performing cryptographic operations (not free). With its help and a bunch of scripts, you can easily automate the process without human intervention.

Answer 2

When CryptoARM was needed for a terminal server for 30+k, where I recently bought a CryptoPro server license for 37k+, I felt sorry for the money. I googled and found an alternative: CryptoLine from Taxcom.
https://taxcom.ru/tekhpodderzhka/elektronnaya-podp...
Not so convenient, not so intuitive, but it does the job.