php key authentication script

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 1.2.3.4 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.

## Deliverables

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.

## Platform

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...

Навыки: Компьютерная безопасность, Техника, MySQL, Perl, PHP, Архитектура ПО, Тестирование ПО, Безопасность сети

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ID проекта: #2861075