I've got an info portal where I recently decided to host thematic files for download. To facilitate this, I integrated an object storage solution with my domain via hosting services. Now, when users click on download links, they're redirected to a subdomain of the object storage, specifically files.mydomain.com, which appears to be an extension of my main site.

The issue I'm facing is that I'm unable to provision an SSL certificate for this subdomain. I've scoured the web for a solution, but to no avail. From what I gather, I need to configure SSL for the subdomain within the object storage itself, since it's not under the purview of my hosting provider. Has anyone else encountered a similar conundrum?

It's a common gotcha when integrating third-party object storage solutions with your domain. The issue lies in the fact that the subdomain files.mydomain.com is not under your hosting provider's purview, making it challenging to provision an SSL certificate. You're on the right track, though - you do need to configure SSL within the object storage itself.
I'd recommend checking the object storage provider's documentation for SSL setup guides or reaching out to their support team for assistance. They should be able to provide you with the necessary steps to get an SSL certificate up and running for your subdomain.

It's worth noting that in a virtual hosting environment, leveraging a Let's Encrypt certificate typically triggers an automated distribution to subdomains across the majority of hosting platforms. In such a scenario, it's advisable to reach out to the hosting provider to facilitate a seamless setup.
Conversely, when dealing with a Virtual Private Server (VPS) or a paid certificate, the protocol may involve contacting the hosting provider or, alternatively, seeking guidance from more seasoned colleagues who can walk you through the requisite server-side configurations.

Notably, this process may necessitate navigating the intricacies of Certificate Signing Requests (CSRs) and certificate issuance, underscoring the importance of collaborating with experienced professionals to ensure a secure and efficient SSL/TLS deployment.

Implementing a robust object storage solution necessitates the presence of a programmable API, thereby facilitating the setup of HTTP validation via a straightforward API call, or alternatively, leveraging a wildcard certificate for the primary domain and DNS validation.
Initially, it's crucial to ascertain whether the object storage provider permits SSL/TLS certificate installation, ideally at no additional cost. In scenarios where request proxying is employed on your hosting infrastructure, you can opt to install the certificate directly on your hosting platform, thereby enabling secure access to the object storage via an unencrypted protocol, effectively offloading the encryption overhead.