Nginx - Securing URLs

server {
    listen 80;
    server_name secure-link-demo;

    location /videos {
        secure_link_secret enigma;
        if ($secure_link = "") { return 403; }

        rewrite ^ /secure/$secure_link;
    }

    location /secure {
        internal;
        root /opt;
    }
}

With this configuration, to access the file /opt/secure/hls/bunny.m3u8 clients must present the following URL:

• /videos/80e2dfecb5f54513ad4e2e6217d36fd4/hls/bunny.m3u8

Generating the hash

# echo -n 'hls/bunny.m3u8enigma' | openssl md5 -hex
(stdin)= 80e2dfecb5f54513ad4e2e6217d36fd4