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Tornado.cash Trusted Setup Ceremony app
zk-SNARKs require a pre-existing setup between the prover and verifier. A set of public parameters define the “rules of the game” for the construction of zk-SNARKs. This app allows everyone to contribute with your source of entropy so that tornado.cash can be trustless.
Environment variables
The app can use .env.development
and .env.production
. What file will be used depends on NODE_ENV
variable.
For command yarn dev
the .env.development
is used. The yarn start
uses .env.production
.
ENV_VAR | Description |
---|---|
DISABLE_S3 | Disable contributions uploading to AWS S3. true or false |
AWS_ACCESS_KEY_ID | AWS access key |
AWS_SECRET_ACCESS_KEY | AWS secret key |
AWS_S3_BUCKET | AWS S3 bucket where the contributions will be uploaded |
MYSQL_USER | Mysql user the app uses. Notice, you don't need mysql db for development. The app will use local sqlite db in dev mode. Local db is stored in db.development.sqlite file. |
MYSQL_PASSWORD | Mysql password for MYSQL_USER |
MYSQL_DATABASE | Mysql database |
TWITTER_CONSUMER_KEY | Twitter consumer API key. Twitter app |
TWITTER_CONSUMER_SECRET | Twitter consumer API secret |
TWITTER_CALLBACK_URL | Twitter callback URL. The app handles the /api/oauth_callback/twitter endpoint. Feel free to change domain name and protocol though |
GITHUB_CLIEND_ID | Github client id. How to create Github OAuth app |
GITHUB_CLIENT_SECRET | Github client secret |
GITHUB_CALLBACK_URL | Github callback URL. The app handles the /api/oauth_callback/github endpoint. Feel free to change domain name and protocol though |
SESSION_SECRET | A random string that will be used by express-session to sign the session ID cookie. |
Development setup
$ yarn install
# Edit all necessary environment variables. See the explanation above.
$ cp .env.example .env.development
# serve with hot reload at localhost:3000
$ yarn dev
Production setup
Follow instructions in the Initialize ceremony section to generate current.params
ceremony file.
# Edit all necessary environment variables. See the explanation above.
$ cp .env.example .env.production
# Run Nginx + Letsencrypt containers to serve https requests to the app
$ cd frontend
$ docker-compose up -d
$ cd ..
# Set VIRTUAL_HOST and LETSENCRYPT_HOST variables in the app's docker-compose.yml file
# Run the app and mysql database containers. It will use the MYSQL_USER, MYSQL_PASSWORD and MYSQL_DATABASE vars you specified in .env.production file.
$ docker-compose up -d
Initialize ceremony (current.params
file creation):
git clone https://github.com/tornadocash/phase2-bn254 && cd phase2-bn254
git checkout wasm
- go to
./powersoftau/src/bn256/mod.rs
and changeREQUIRED_POWER
to 15 (it's going to fit 36k constaints snark) cd powersoftau
- run
./test.sh
. After this step you will get manyphase1radix*
files. - Download withdraw.json for required circuit to
./phase2
folder cd ../phase2
cp ../powersoftau/phase1radix* .
cargo run --release --bin new withdraw.json current.params
- The
current.params
file is your initial challenge file. - copy
current.params
,withdraw.json
andphase1radix*
to./server/snark_files
folder. mv withdraw.json circuit.json