4.2 KiB

Raw Blame History

mpc

This document is a guide to participating in Multi-party Computation(MPC) phase 2 and verifying the result.

What should I do ?

Send an email to tronz_mpc@tronz.io to apply to participate in MPC. Please introduce yourself in the email and tell us your available time. For example:

Hi, Tronz,

  I'm Brown, apply to participate in MPC project, my available time is 2020-01-20 ~ 2020-01-22, 
  8:00~10:00 am, UTC+8. As a student of Peking University, I live in Beijing China now, focus on
  Blockchain technology.

Your sincerely，
Brown

TRONZ will send you an email about the time for you to participate in MPC.
When it is your turn, TRONZ will send you a notification email and give you a params file link which you will need to download.
Download and install IM tool keybase. If you don't have an account yet, create an account and add TRONZ' account as your friends. TRONZ's account is tronz_mpc.
Prepare your server. Recommended requirements of server requires:
- Processor (CPU): Intel Core i5 (sixth generation or newer) or equivalent
- Operating System: Linux (Recommended) / macOS / Windows 7+
- Memory: 8 GB RAM
- Storage: 500 GB internal storage drive

On Windows, please go to rust homepage for installation instruction, then jump to next step.

On Mac, install xcode command line tools first:

# xcode-select --install

Obtain the source code of project mpc:

# git clone https://github.com/tronprotocol/mpc

If git has not been installed on your computer, please refer to git first.

On Mac/Linux, in the mpc directory, run following command in your terminal and choose 1 in the following selection:

# sh compute.sh <your_params_link>

On Windows, in the mpc directory, download params file, then run:

# cargo run --release --bin compute

When it’s finished, you will get a new_params file and a hash which you must need to record. You can find the hash and new_params as shown below:

Notice: this process could take 0.5 ~ 1 hours according to your hardware capacity and occupy 1.5 ~ 2GB of memory.

Send your result to TRONZ. Send the file new_params by keybase, send hash string by email. Feel free to state your os version in email. E.g. windows 7/centos 7.

Dependency

We reuse the phase 2 result of zcash https://download.z.cash/sapling-mpc/params as the first params of the process. At the end of process, we generate the random beacon by using one Bitcoin block's hash as the seed of pseudo random number generator; The block's height will not be determined until last participant completes his operation. After we verify all participants' contribution, we will publish all hash on project wiki page. Anyone can do this verification as belows.

How to verify my contribution ?

After all participants finish the process, we will announce final params at aws. Following as below to verify your contribution:

# cd mpc
# wget https://mpcfilepub.s3.amazonaws.com/mpc/params
# wget https://mpcfilepub.s3.amazonaws.com/powersoftau/powersoftau_phase1_files.tar
# tar xvf powersoftau_phase1_files.tar && cp powersoftau_phase1_files/* .
# cargo run --release --features="verification" --bin verify

This verification may take about 1 hour and then output all participants' contribution. Find whether your hash is in the list.

License

Licensed under either of

Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

4.2 KiB Raw Blame History Unescape Escape