Hi all
Today, Sebastiaan and I have been doing some serious thinking and
looking into the VIFF code, and we feel convinced that we've found the
bug.
The problem lies entirely in the multiplication protocol. In
Runtime.mul, products of shares are computed and shared. Then secure
Lagrange
[EMAIL PROTECTED] writes:
Hi all
Today, Sebastiaan and I have been doing some serious thinking and
looking into the VIFF code, and we feel convinced that we've found the
bug.
Great work, thanks to both of you for solving the mystery! I guess this
bug is sufficiently grave that we should do
Martin Geisler [EMAIL PROTECTED] writes:
That would be a good idea, also for performance. I suggest that we use
a round-robin system where we determine the perticipating subset based
on the current program counter.
Code for this would look like this:
diff --git a/viff/runtime.py
Hi,
Tomas is right, of course. For the passive case, using the first 2t+1 players
always works, and for the active case, we do not use the
local-multiply-and-reshare method anyway. The current implementation of active
security has
a preprocessing step based on either PRSS or hyper invertible
Tomas is right, of course. For the passive case, using the first 2t+1 players
always works, and for the active case, we do not use the
local-multiply-and-reshare method anyway.
The thing is, I always just assumed that we always used the same set of shares,
and it is kind of easy to miss if you
Hoogh, S.J.A. de [EMAIL PROTECTED] writes:
Hi Sebastiaan
I've looked at your code, and I don't understand the final part, the
one which is supposed to calculate the sorted order of the
millionaires:
# We can establish the correct order of Millionaires 2 and 3.
comparison
@viff.dk
Subject: Re: FW: Bug in ViFF
Hoogh, S.J.A. de [EMAIL PROTECTED] writes:
Hi Sebastiaan,
Thanks for giving VIFF some exercise! :-)
Tomas Toft and I are using ViFF to analyze Toft's secure Linear
Programming protocol. At the first sight everything seemed to work
nicely, but when trying
Nope,
Also with version 0.7 exactly the same problem occurs.
Sincerely,
Sebastiaan
-Original Message-
From: Martin Geisler [mailto:[EMAIL PROTECTED]
Sent: woensdag 1 oktober 2008 9:39
To: Hoogh, S.J.A. de
Cc: viff-devel@viff.dk
Subject: Re: FW: Bug in ViFF
Hoogh, S.J.A. de [EMAIL
