3

I'm trying to deploy a contract private to one node in the Quourm 7-nodes example. The migrate works as expected when deployed normally with truffle, but ignores the privateFor part and deploys a public contract when used with truffle-hdwallet-provider. Are there any changes I can make to make the HDWalletProvider work?

2_deploy_contract.js

var SimpleStorage = artifacts.require("SimpleStorage");
module.exports = function (deployer) {
    // Pass 42 to the contract as the first constructor parameter
    deployer.deploy(SimpleStorage, 42, { privateFor: ['ROAZBWtSacxXQrOe3FGAqJDyJjFePR5ce4TSIzmJ0Bc='] })
};

truffle.js

Works:

development: {
  host: "127.0.0.1",
  port: 22000,
  network_id: "*",
  gasPrice: 0,
  gas: 4500000
}      

Fails (Deploys a public contract instead of a private one):

quorum: {
  provider: () => new HDWalletProvider(mnemonic, 'http://localhost:22000'),
  network_id: "*",
  gas: 4500000,
  gasPrice: 0
}

The consensus I am using is IBFT, if that is useful.

5

Updated: Since Quorum v2.2.1, we now support remote signing for raw (read signed) private transactions. The API is explained in several places, but a great starting point is Quorum.js hosted here: https://github.com/jpmorganchase/quorum.js/

Original: answered Sep 10 '18 at 18:54 At the moment, Quorum does not support sending signed / raw txns that are private -- only public ones. The simple explanation is that Quorum client (geth) will pass open data / value into txn manager (ie, constellation) on its own and when you send a signed txn, client does not have the keys needed to run it through constellation.

  • Thanks for answering! Can you tell if there is any chance of enabling remote signing in future releases? – KBhokray Sep 10 '18 at 19:14
  • Its likely that we will provide some kind of a custom bridge between an ethereum/quorum account and txn manager in Quorum that will allow for signing with own keys, but its a feature that we're only beginning to look at. – fixanoid Sep 11 '18 at 21:07

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