[viff-devel] [issue80] Broadcast

[Janus Dam Nielsen]

In the simple case I want to shout out a number to everybody, even  
somebody who is eavesdropping.

--
Janus


Den 10/03/2009 kl. 12.23 skrev Ivan Bjerre Damgård:

> It can definitely be useful to have a broadcast method, for  
> instance to complete the implementation of the asynchronous  
> maliciously secure protocol, we will need broadcast.
>
> But one needs to be careful about what kind of security we want.  
> There is a whole jungle of protocols, depending on whether it is  
> unconditional or computational security, synchronous or  
> asynchronous network, and what number of players you assume can be  
> corrupt. I think a protocol of Bracha has in fact already been  
> implemented in VIFF
>
> regards, Ivan
>
> Quoting Janus Dam Nielsen <tracker at viff.dk>:
>
>>
>> New submission from Janus Dam Nielsen <janus.nielsen at alexandra.dk>:
>>
>> I would like to see a broadcast method in the Runtime class. The
>> purpose of the broadcast method should be to distribute a public  
>> value
>> among all parties (or some subset of parties).
>>
>> A case: All parties in a computation needs to read a value from
>> standard in, and it is a different value for each party. We want to
>> tell the value to everybody else.
>>
>> An example use could be like the input method:
>> a,b,c = runtime.broadcast([1,2,3], value)
>>
>> Similarly, broadcast can be used in a conditional if only some subset
>> of parties wants to distribute a value.
>>
>> ----------
>> assignedto: mg
>> messages: 310
>> nosy: jdn, mas, mg
>> status: chatting
>> title: Broadcast
>> type: wish
>>
>> ____________________________________
>> VIFF Issue Tracker <tracker at viff.dk>
>> <http://tracker.viff.dk/issue80>
>> ____________________________________
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>
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