C programmer need custom implementation in Nginx source code

I need custom implementation in Nginx source code to meet our project requirements. I have custom applications that need to be protected through common token as the following example [login to view URL] (UUID will be dynamic) [login to view URL] (UUID will be dynamic) And this token must set as an environment variable to the Nginx server. so we can access it our applications written in other languages The Second Task:- is read certificate file and redirects a user to URL when It is expired. [login to view URL] URL Test certificate can be generated by the following command sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/ssl/private/[login to view URL] -out /etc/ssl/certs/[login to view URL] The third task:- I need 2 functions defined in Nginx source for JWT (RS256) for encode, decode JWT token