title: secure way to deliver password over URL?
body: <p>i wonder if there's a secure way to deliver a password with an URL (like ?p=mypassword) 
  how can i encrypt and decrypt such a password so it's secure.</p>
  
  <p>i guess md5 is not working in my case because the password must still be readable. It's an FTP passwort which gets passes along to the ftp_connect. i think md5 doesn't work in this case because i have to query if a string matches the md5 hash. however i can't do that in my case.</p>
  
  <p>any ideas?</p>