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Casper Keys Manager

First-time contributors can find complete instructions in the Multi-Signature Tutorial.

The steps below are a quick start if you have already set up your development environment, the casper node, and the nctl testing tool.

Installing the contract and client

The JS client code expects a compiled WASM file in the contract folder and a local network called casper-net-1.

Compile the smart contract

To compile the WASM file, use these commands:

cd keys-manager
make prepare
make build-contract

Prepare a local nctl network

Set up nctl to interact and deploy to a local network.

Environment configuration

You need to set certain environment variables in an .env file in the client folder.

You need to set the minimum configuration for your client to communicate with the network:

  • The BASE_KEY_PATH for the absolute path to your faucet account
  • The NODE_URL for the first node in your local network

Your .env file will look like this (replace <ENTER_YOUR_PATH> with the absolute path of your local drive, because the relative path does not work in this context):

 BASE_KEY_PATH=<ENTER_YOUR_PATH>/casper-node/utils/nctl/assets/net-1/faucet/
 NODE_URL=http://localhost:11101/rpc

If you want to customize your setup further, you can set other optional environment variables described below.

 WASM_PATH=... # optional, defaults to ../contract/target/wasm32-unknown-unknown/release/keys-manager.wasm
 NETWORK_NAME=... # optional, defaults to casper-net-1
 FUND_AMOUNT=10000000000000 # defaults to 10000000000000 = 10000CSPR
 PAYMENT_AMOUNT=100000000000 # defaults to 100000000000 = 100CSPR
 TRANSFER_AMOUNT=2500000000 # defaults to 2500000000 = 2.5CSPR

You can also provide a custom .env path by running this command:

 npm run start:atomic dotenv_config_path=./example-env-file

Client installation

To install the client, run npm install in the client folder.

 cd client
 npm install

Running prepared scenarios

You will run an example scenario with the following command where three additional accounts will be added to the main account. You will need two out of four accounts to perform a deploy. You will need three out of four accounts to add a new account. Run this command to try out this example:

 npm run start:all

In a second example scenario, two additional accounts will be added to the main account to perform deploys, but they will not be able to add another account. Run this command for this example:

 npm run start:atomic

Interactive mode

To run a script in interactive mode, just add interactive to the above commands.