Indeed you can. When a user makes a request, it is sent to Cloudflare, which then routes it to your server through the tunnel. The traffic can be encrypted while in transit to Cloudflare, ensuring that their network does not inspect or decrypt the contents. Once the encrypted traffic reaches your server, you handle decryption using your own application logic. Only your server has the keys to decrypt the data, so Cloudflare remains blind to any sensitive information.