I have an app that runs on PHP 5.3 which stores passwords hashed using PHP’s crypt() function. However the hashing type (SHA 512) used is not available by default on one of the servers I’m now using which runs PHP 5.2. I’ve seen that with mcrypt you get a lot more flexibility but it’s also more complicated to use.
Is it possible to use PHP’s mcrypt functions to get the same results as with crypt (using a SHA512 salt)?
So if I input “test” with an SHA512 salt the encrypted data should be the same when using crypt() as well as when using mcrypt().
If it’s not possible, can anyone give me advice on what else to do? Unfortunately upgrading to PHP 5.3 is not an option (it’s a cloud server and I don’t have the time to write the scripts for that).
Unfortunately MCrypt doesn’t have the SHA512 cipher – you can take a look at the list of ciphers here:
http://www.php.net/manual/en/mcrypt.ciphers.php