Re: [zapps-wg] Participation in MPC process

[Zcash FR Team via zapps-wg]

Hi

We finally did it. Thanks to Sean, Jason and the Zcash Foundation for 
make it possible.


Here our signed report.

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Powers of Tau Operational Writeup
=

Round: 70
Date: 2018-03-06
Name: Zcash FR Team
Location: Paris, FR


Preparation steps
=

Zcash FR Team is currently compose of 3 members. Each member brings is 
own computer prepared by himself. We did not talk to each other which 
preparation was made neither which software or version was installed.


Sidechannel Defences


The computing process was done in the flat of a Zcash FR Team member. In 
this flat there was the 3 members of Zcash FR Team and nobody else.

Computing was done offline.

Procedure
=

We start with 3 computers ready to compute. For convenience reason we 
needed to use 1 computer so we took 1 computer at random and get it off 
the computing process.


Then we downloaded the challenge file on the 2 computers selected to 
participate.


The text entered to provide additional entropy was different on the 2 
computers.

It was composed of :
- - - Random type
- - - Name of Zcash FR Team members
- - - Information display on TV channel
- - - Play card picked randomly


After the response file was generated on both computer we decided to 
play a video game to decide which response file will be send. The winner 
send is own response file.



The BLAKE2b hash of `./response` is:
9298f7b3 31daa220 55c31fae 4564ca59
33e0a1ce 6861c92d 33d755bc 4a68756d
6b1c6f78 7a2c4a1a 53681f2b b4026ece
350bb618 d8a9f847 2b18ddc2 ce117865



Postprocessing
==
Nothing special, the computer was turn off.

- ---
Zcash FR Team
Unofficial Zcash French community
https://zcashfr.io
-BEGIN PGP SIGNATURE-

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--
Zcash FR Team
Unofficial Zcash French community
https://zcashfr.io

Le 2018-01-22 17:02, Team Zcash FR via zapps-wg a écrit :

Hi,
We would like to participate to MPC as Zcash FR team 
(https://zcashfr.io)

We are 3 and or process need to be together at the same time to launch
the process.
We can perform the computation Tuesday 23 January or Tuesday 30 
January.
We will compute and send back the response file at the evening UTC 
time.

Thank you.-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Powers of Tau Operational Writeup
=

Round: 70
Date: 2018-03-06
Name: Zcash FR Team
Location: Paris, FR


Preparation steps
=

Zcash FR Team is currently compose of 3 members. Each member brings is own 
computer prepared by himself. We did not talk to each other which preparation 
was made neither which software or version was installed.

Sidechannel Defences


The computing process was done in the flat of a Zcash FR Team member. In this 
flat there was the 3 members of Zcash FR Team and nobody else.
Computing was done offline.

Procedure
=

We start with 3 computers ready to compute. For convenience reason we needed to 
use 1 computer so we took 1 computer at random and get it off the computing 
process.

Then we downloaded the challenge file on the 2 computers selected to 
participate.

The text entered to provide additional entropy was different on the 2 computers.
It was composed of :
- - - Random type
- - - Name of Zcash FR Team members
- - - Information display on TV channel
- - - Play card picked randomly


After the response file was generated on both computer we decided to play a 
video game to decide which response file will be send. The winner send is own 
response file.


The BLAKE2b hash of `./response` is:
9298f7b3 31daa220 55c31fae 4564ca59
33e0a1ce 6861c92d 33d755bc 4a68756d
6b1c6f78 7a2c4a1a 53681f2b b4026ece
350bb618 d8a9f847 2b18ddc2 ce117865

 

Postprocessing
==
Nothing special, the computer was turn off.

- ---
Zcash FR Team
Unofficial Zcash French community
https://zcashfr.io
-BEGIN PGP SIGNATURE-

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OrXnQfZFGHRKTCb1Q241DROoczvO43KJvBRW7u0fnvYazpuIeVNcaVljzSYhlejz
C1FxYz+W0jIOeg545kQs1qJXwwRr3vIXNSW1qJgWWQraivFGTLQJcmp2Sqf4AFDH
6v0rmSE8sRFSeB1r2okfHVNYe4gjJ9NLVp7sA7KdOvDPB2aD4utruBpsKF2U1us0
l8Eo2RNL6ZEa/9NKWiPnUNIqTGBVFg==
=Q4qU
-END PGP SIGNATURE-

Re: [zapps-wg] Participation in MPC process

[Zcash FR Team via zapps-wg]

Hi Sean,

We can do it any Tuesday.
So next available Tuesday is OK for us.

--
Zcash FR Team
Unofficial Zcash French community
https://zcashfr.io


Le 2018-01-22 17:05, Sean Bowe a écrit :

Hi,

I have people scheduled for both of those dates. If there are other
dates that you'll be available let me know.

Sean

On Mon, Jan 22, 2018 at 9:02 AM, Team Zcash FR via zapps-wg
 wrote:

Hi,
We would like to participate to MPC as Zcash FR team 
(https://zcashfr.io)
We are 3 and or process need to be together at the same time to launch 
the

process.
We can perform the computation Tuesday 23 January or Tuesday 30 
January.
We will compute and send back the response file at the evening UTC 
time.

Thank you.
--
Team Zcash FR
https://zcashfr.io