I am having trouble deploying my smart contract to the ropsten network using infura and truffle am getting error that says
"var sig = secp256k1.sign(msgHash, privateKey);
^
TypeError: private key should be a Buffer"
3 Answers
You can find how to deploy a contract using truffle and infura as it is explained truffle documentation
I copied the deployment code that I already owned below,
// Allows us to use ES6 in our migrations and tests.
require('babel-register')
const HDWalletProvider = require("truffle-hdwallet-provider-privkey");
const privateKey = "PRIVATEKEYADDRESS"; // private keys
module.exports = {
// See <http://truffleframework.com/docs/advanced/configuration>
// for more about customizing your Truffle configuration!
networks: {
development: {
host: "127.0.0.1",
port: 8545,
network_id: "*" // Match any network id
},
rinkeby: {
provider: () => {
return new HDWalletProvider(privateKey, "https://rinkeby.infura.io/INFURAAPIKEY")
},
network_id: 4
}
}
};
Hope it works for you as well
-
Mehmet Dogan Thanks for the help but am still getting another error it outputs Error encountered, bailing. Network state unknown. Review successful transactions manually. insufficient funds for gas * price + value– danielJun 28, 2018 at 8:03
-
You share little with us and want to get full answer. But as far I know, this error is encountered when you try to deploy an Interface which includes unimplemented functions like ERC20Interface. Assuming that you try to deploy a contract named myContract
contract myContract is ERC20Interface { .. }Then you just need to include myContract in your 2_deploy_contracts.js file Jun 28, 2018 at 17:58
You have to use 'from' address in lower case while deploying the contract to test network inorder to avoid this error.
-
-
Give a try. Actually, it worked for me and hence I responded!! Dec 7, 2018 at 15:45
-
-
If you are deploying your contract like this for example: SampleContract.new(abcd, {from: '0xAD123EFG456...'}).then(function(){}); then the from address should be in small letters like SampleContract.new(abcd, {from: '0xad123efg456...'}).then(function(){}); Dec 8, 2018 at 12:28
Agree with Ismael saying the function sepc256k1.sign won't need from parameter. worked for me without private keys declaration and from parameter
const privateKey = Buffer.from("ab1a..", "hex");