Random number generators

[Mehmet Erol Sanliturk]

On Tue, Mar 17, 2015 at 11:39 AM, Pedro Giffuni <pfg at freebsd.org> wrote:

>  Hi;
>
> On 03/17/15 13:18, Mehmet Erol Sanliturk wrote:
>
>
>
> On Tue, Mar 17, 2015 at 11:10 AM, Pedro Giffuni <pfg at freebsd.org> wrote:
>
>> Hi Dennis;
>>
>> On 03/17/15 12:22, Dennis E. Hamilton wrote:
>>
>>> There is a lot of discussion about qualities of Random Number generators
>>> on cryptography lists.  MT is not a good choice for that, but it might not
>>> need to be important for other applications.
>>>
>>> There has been some recent work, PCG, that has attracted some attention,
>>> <http://www.pcg-random.org/>.  There are good videos explaining what
>>> the approach is about as well.  PCG also has implementations in C.  (It is
>>> under the Apache License 2.0 too: <https://github.com/imneme/pcg-c-basic>
>>> for a minimal family and <https://github.com/imneme/pcg-c> for ones
>>> with extended capabilities.)
>>>
>>> The analysis of what does and doesn't work, and how passing diehard is
>>> too easy, is also valuable.
>>>
>>> If you are serious about crypto grade randomness, libc is probably not
>>> the answer.  Generally, I don't think reliance on a single generator for
>>> general purpose use and for cryptographic quality is going to work well.
>>> This is a very context-sensitive situation and addressing specific threat
>>> models against cryptographic PRGs is a very different matter from wanting
>>> unpredictable and good quality pseudo-randoms for simulations and other
>>> purposes.
>>>
>>
>> The pcg-random link seems to be down now but for crypto, we have
>> arc4random(3) which is pretty good and about to be improved further.
>>
>> Pedro.
>>
>> _______________________________________________
>>
>>
>
>  Three of the above links are accessible from here at Izmir , in Turkey .
>
>
> It just came up here. It looks like PCG compares favorably with ChaCha20,
> but
> this is PCG's page and the comparison is not very clear ("Secure" vs
> "Challenging"?)
>
> It may be worth considering though.
>
> Pedro.
>


There is the following page :

http://csrc.nist.gov/groups/ST/toolkit/rng/index.html
random number generation
( Software is in Public Domain )

I do not know whether it  may be useful or not for this thread .


Thank you very much .


Mehmet Erol Sanliturk