Re: Use decent entropy for uniqid($prefix, TRUE)
| From: | Yasuo Ohgaki | Date: | Sun, 08 Jan 2017 21:08:17 +0000 |
| Subject: | Re: Use decent entropy for uniqid($prefix, TRUE) | ||
| References: | 1 2 3 4 5 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-97596@lists.php.net to get a copy of this message | ||
On Mon, Jan 9, 2017 at 5:07 AM, Yasuo Ohgaki <yohgaki@ohgaki.net> wrote:
> On Mon, Jan 9, 2017 at 2:29 AM, Lauri Kenttä <lauri.kentta@gmail.com>
> wrote:
>
>> On 2017-01-07 03:15, Yasuo Ohgaki wrote:
>>
>>> + php_random_int(1000000000, 9999999999, &rand, 1);
>>>
>>> This should be
>>>
>>> + php_random_int(0, 9999999999, &rand, 1);
>>>
>>
>> No, it shouldn't. That fixes none of the reported problems. You still
>> have too many numbers (integer overflow) and still produce 0.abcdefgh
>> instead of a.bcdefghi.
>>
>> If you can't fix it, maybe you shouldn't be doing it in the first place....
>
>
> Did you read my mail?
> Please read mail again.
>
Anyway, I agree your way is optimal for 9 digit chars entropy. I don't care
about extending entropy strength, longer length and use of non digits, for
now. Are we OK with the patch Lauri proposed?
Regards,
--
Yasuo Ohgaki
yohgaki@ohgaki.net