PHP Function for generating a hash of host hardware profile

Hello Bidders, We need a PHP function that will generate a one-way hash of the host's hardware profile salted with a given number. The hardware profile must be unique to the host (maybe - could use specific datafields from the output of the dmidecode command) . The idea is to ensure that our script only runs on that particular host. And the number is used as a further integrity test; it will be passed to the hash function. The hash will then be stored into a file with the name 'key'. And we need another function that will check against a salted hash to verify integrity of the script. This check script will be given the same salt ( the number ), and will then generate a hash using the hardware profile and salt, compare it with the hash in the file 'key' and return a true or false for the match. For the right person, this should be a fairly simple project so please bid reasonably. Any questions, please use PM. Thanks, Sam..