Re: Re: Improving mt_rand() seed

Hi all, On Mon, Jan 30, 2017 at 7:54 PM, Yasuo Ohgaki <yohgaki@ohgaki.net> wrote: > On Mon, Jan 30, 2017 at 7:47 PM, Yasuo Ohgaki <yohgaki@ohgaki.net> wrote: > >> On Mon, Jan 30, 2017 at 7:41 PM, Lauri Kenttä <lauri.kentta@gmail.com> >> wrote: >> >>> On 2017-01-30 04:25, Yasuo Ohgaki wrote: >>> >>>> I'll prepare patch that allows int array >>>> initialization for mt_srand() so that whole state buffer can be >>>> initialized as user specifies. >>>> >>> >>> Don't. >>> >>> See these: >>> https://github.com/php/php-src/pull/2089 >>> >>> https://www.mail-archive.com/internals@lists.php.net/msg87590.html >> >> >> Nice! >> >> Thank you for letting me know. >> BTW, do you have good idea for the seeding issue? >> > > I got it now. Object based PRNG sounds nice. I may write it, but > I have long todo lists already. > > Anyway, we have to take care existing API and make usable. > We must have MT rand reseed API somehow. > > Ideas are appreciated. > Posting RFC draft before discussion https://wiki.php.net/rfc/improve_predictable_prng_random This RFC includes results of recent PRNG related discussions. I would like to keep it simple, but basic object feature will be implemented. Methods could raise exceptions for invalid operations rather than ignoring. Comments? -- Yasuo Ohgaki yohgaki@ohgaki.net