Re: unify entropy source for all php related functions

On Fri, Feb 7, 2014 at 12:25 PM, Pierre Joye <pierre.php@gmail.com> wrote: > hi, > > There are a lot of additions and discussions about entropy source and > (P)RNG lately. > > PHP already has a ini setting to define a strong entropy source for > the session module, which defaults to urandom or arandom. > > I would like to create two settings to unify the entropy source > accross php functions. That includes mcrypt, new password APIs, > session, LCG, etc. > > Something along this line: > > random.entropy_strong_source (/dev/(u|a)random etc.) > random.entropy_crypto_source (/dev/random etc.) > > I am not willing to propose new RNG functions or extensions for 5.6 as > we have way too little time to actually discuss its design and APIs. > However having these settings unified and documented would be a good > step forward already. > To clarify what this proposal does (from otr discussion with Pierre): * openssl_pseudo_random_bytes - not changed * mcrypt_create_iv($n, MCRYPT_DEV_RANDOM) - uses crypto_source instead of /dev/random * mcrypt_create_iv($n, MCRYPT_DEV_URANDOM) - uses strong_source instead of /dev/urandom * mcrypt_create_iv($n, MCRYPT_RAND) - not changed * password_hash() - uses strong_source * session ID - uses strong_source * lcg_value, rand, mt_rand - not changed Hope everything is correct :) Nikita