Automation of the request-response processes from the NBKI

Develop a program that supports the following functionality:
A. Formation of XML queries in the format given in the Application, with EP in PKCS7 format and subsequent encoding by Base64 algorithm.
B. Establishing a connection using HTTPS and placing a request using POST.
Example:
POST/HTTP/1.0
User-Agent: HTTPTool/1.0

C. Receiving a response, decoding Base 64, followed by deleting and verifying EP in PKCS7 format.
D. Analysis of the XML response received in the format given in the Appendix.