Enigmatic CGI pastebin

Simple CGI script which allows you to transfer sensitive ascii data (passwords, hashes, pem keys) via HTTPS.

SSL MUST BE implemented by webserver.

Algorithm:
- Paste new data into textarea, submit. You get link
Link consists of three md5 hashes from salt. File, containing your data, named that way. So, it is hard to bruteforce links/files.
- Whenever link being opened, script reads file and prints its content into brower in text/plain content-type. Afterthat, script removes file. So one link doesn't work twice and you can securely paste it everywhere.

Prefered deployment schema:
Nginx + SSL as front
Apache + CGI + script as backend