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andreafspeziale/reward-meta-tx-prepare.js

Last active July 3, 2019 17:20
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reward-meta-tx-prepare.js
const userProxyContractNonce = new BigNumber(await ProxyInstance.nonce.call(user))
const messageToBeHashed = [
ProxyInstance.address,
user,
TargetContractInstance.address,
web3.utils.toTwosComplement(userValueTransactionField),
userDataTransactionField,
AssetInstance.address,
web3.utils.toTwosComplement(REWARD_AMOUNT),
web3.utils.toTwosComplement(userProxyContractNonce),
]
const messageHashed = web3.utils.soliditySha3(...messageToBeHashed)
const messageSigned = await web3.eth.sign(messageHashed, user)
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