Here are the steps: we need to come with a door/key solution that look for a specific key in order to open that door and get into your site. The door should change its lock dynamically. That door can be a simple cgi that getting a key in the questy_string (or path_info) and verify that this is the correct key for the door-lock. The door can be an php, cgi, asp or anyother tech. you are comftable on your servers. A common door/key solution using the IP address and a date/time hashed together and verified. Programming steps to secure all your customers: 1. create a hash function that take the first 2 part of the IP and the date and generate a single number (the date should be calculate as gren. time to eliminate time zone problems) example: ip_part1*40 + ip_part2*70 - month*2 + day*76 if my ip is 184.108.40.206 and today is 7/08 the key will be 1*40 + 2*70 - 7*2 + 8*76 = 774 2. create a redirect program to be placed on the customer server; each time that customer want to send you visitor; he have to use that redirect cgi that will insert the "key" into the URL 3. create the door-lock program in your server to verify the key that was transmitted. If the hour is early or late, try to check against yesterday/tomorrow date too in order to eliminate time shifts and time zone problems between your system and your clients.
Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. Complete copyrights to all work purchased.
unix php the application must be able to be implemented into an existing referring url authentication script...
## Deadline information
the application must be able to be implemented into an existing referring url authentication script...