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Unique random key
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Btw if you want to make something like UNIQUE ID for members, it's much easier and smarter to just hash (md5) "$user:$pass" or some other unique field plus some other just to add some more bytes
Sasa Karanovic
www.MrdniSe.com
www.SasaKaranovic.com
I've got good news, and I've got bad news:
The universe is merely a figment of my imagination.
Now are you ready for the bad news?
// Keys are only valid on the day generated
$date = date('m-d-Y');
// We share a secret
$secret = 'secret_shared_between_client_and_server';
// I'll send you this salt in plaintext
$salt = rand();
return array($salt,md5($date.$secret.$salt));
}
// Can we match the passed key and salt using today's date and our
// shared secret?
return md5(date('m-d-Y').$secret.$salt) == $key;
}
// date adds keyspace size, rand adds unpredictability,
// salt precludes rainbow table attacks
global $system_salt;
return md5($system_salt.rand().date());
}
Say for ex. am passing a value from one page to another page and use the function to create a key. If I want to verify / check the created random is key is a correct one, how to do that.
Correct me if am wrong. Can you mention the use of this script as well. so that I can understand clearly.
Regards,
Kumar S
GuyFromChennai.com