[viff-devel] Division

[Atle Mauland]

Hehe, my bad, it just happend to be that the random seed in the  
generate-config-files yielded zero for the 3 first random generations, i  
ran the config again and now i get "more random" numbers :D

On Fri, 27 Feb 2009 14:32:21 +0100, Atle Mauland <atlema at stud.ntnu.no>  
wrote:

> On Wed, 18 Feb 2009 18:13:00 +0100, Martin Geisler <mg at daimi.au.dk>  
> wrote:
>
>> "Atle Mauland" <atlema at stud.ntnu.no> writes:
>>
>> Hi Atle!
>>
>>> Hi! I'm experimenting with the RSA problem in VIFF, so i need to have
>>> 2 primes (p and q) plus d (the inverse) secret shared.
>>
>> Ohh, cool!
>>
>>> I have a couple of question regarding implemented functions in VIFF:
>>>
>>> Is there any way to do shared division / modulus in VIFF?
>>
>> We have this example program which Sigurd knows more about:
>>
>>   http://hg.viff.dk/viff/file/tip/apps/divide.py
>>
>>> What's the best way of getting a shared random bit / value?
>>
>> That would be prss_share_random(field, binary=True):
>
> I have written my code like this just to try this function:
>
> 	bit1 = runtime.prss_share_random(Zp, True)
>          bit2 = runtime.prss_share_random(Zp, True)
>          bit3 = runtime.prss_share_random(Zp, True)
>
> but every time I always get 0 (zero) as the answer for all bits... What  
> do I do wrong?
>
>>
>>   http://viff.dk/doc/passive.html#viff.passive.PassiveRuntime.prss_share_random
>>
>>> I talked to my supervisor, Tord, and we are wondering if there is any
>>> bit-decomposition function implemented?
>>
>> Not directly, but maybe as part of the comparison protocols -- Tomas?
>>
>
>
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