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Support creating deposit notes offline

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Co-authored-by: yoyoismee <yoyoismee@gmail.com>
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Ayanami 2022-02-27 07:32:37 +09:00
parent 378bab8fbe
commit 2854b7a12f
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3 changed files with 137 additions and 9 deletions
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103
cli.js
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@ -180,27 +180,68 @@ async function backupNote({ currency, amount, netId, note, noteString }) {
}
}
async function backupInvoice({ currency, amount, netId, commitmentNote, invoiceString }) {
try {
await fs.writeFileSync(`./backup-tornadoInvoice-${currency}-${amount}-${netId}-${commitmentNote.slice(0, 10)}.txt`, invoiceString, 'utf8');
console.log("Backed up invoice as", `./backup-tornadoInvoice-${currency}-${amount}-${netId}-${commitmentNote.slice(0, 10)}.txt`)
} catch (e) {
throw new Error('Writing backup invoice failed:', e)
}
}
/**
* Make a deposit
* create a deposit invoice.
* @param currency Сurrency
* @param amount Deposit amount
*/
async function deposit({ currency, amount }) {
assert(senderAccount != null, 'Error! PRIVATE_KEY not found. Please provide PRIVATE_KEY in .env file if you deposit');
async function createInvoice({ currency, amount, chainId }) {
const deposit = createDeposit({
nullifier: rbigint(31),
secret: rbigint(31)
});
const note = toHex(deposit.preimage, 62);
const noteString = `tornado-${currency}-${amount}-${netId}-${note}`;
const noteString = `tornado-${currency}-${amount}-${chainId}-${note}`;
console.log(`Your note: ${noteString}`);
await backupNote({ currency, amount, netId, note, noteString });
const commitmentNote = toHex(deposit.commitment);
const invoiceString = `tornadoInvoice-${currency}-${amount}-${chainId}-${commitmentNote}`;
console.log(`Your invoice for deposit: ${invoiceString}`);
await backupNote({ currency, amount, netId: chainId, note, noteString });
await backupInvoice({ currency, amount, netId: chainId, commitmentNote, invoiceString });
return (noteString, invoiceString);
}
/**
* Make a deposit
* @param currency Сurrency
* @param amount Deposit amount
*/
async function deposit({ currency, amount, commitmentNote }) {
assert(senderAccount != null, 'Error! PRIVATE_KEY not found. Please provide PRIVATE_KEY in .env file if you deposit');
let commitment;
if (!commitmentNote) {
console.log("Creating new random deposit note");
const deposit = createDeposit({
nullifier: rbigint(31),
secret: rbigint(31)
});
const note = toHex(deposit.preimage, 62);
const noteString = `tornado-${currency}-${amount}-${netId}-${note}`;
console.log(`Your note: ${noteString}`);
await backupNote({ currency, amount, netId, note, noteString });
commitment = toHex(deposit.commitment);
} else {
console.log("Using supplied invoice for deposit");
commitment = toHex(commitmentNote);
}
if (currency === netSymbol.toLowerCase()) {
await printETHBalance({ address: tornadoContract._address, name: 'Tornado contract' });
await printETHBalance({ address: senderAccount, name: 'Sender account' });
const value = isTestRPC ? ETH_AMOUNT : fromDecimals({ amount, decimals: 18 });
console.log('Submitting deposit transaction');
await generateTransaction(contractAddress, tornado.methods.deposit(tornadoInstance, toHex(deposit.commitment), []).encodeABI(), value);
await generateTransaction(contractAddress, tornado.methods.deposit(tornadoInstance, commitment, []).encodeABI(), value);
await printETHBalance({ address: tornadoContract._address, name: 'Tornado contract' });
await printETHBalance({ address: senderAccount, name: 'Sender account' });
} else {
@ -222,12 +263,14 @@ async function deposit({ currency, amount }) {
}
console.log('Submitting deposit transaction');
await generateTransaction(contractAddress, tornado.methods.deposit(tornadoInstance, toHex(deposit.commitment), []).encodeABI());
await generateTransaction(contractAddress, tornado.methods.deposit(tornadoInstance, commitment, []).encodeABI());
await printERC20Balance({ address: tornadoContract._address, name: 'Tornado contract' });
await printERC20Balance({ address: senderAccount, name: 'Sender account' });
}
return noteString;
if(!commitmentNote) {
return noteString;
}
}
/**
@ -1051,6 +1094,29 @@ function parseNote(noteString) {
}
}
/**
* Parses Tornado.cash deposit invoice
* @param invoiceString the note
*/
function parseInvoice(invoiceString) {
const noteRegex = /tornadoInvoice-(?<currency>\w+)-(?<amount>[\d.]+)-(?<netId>\d+)-0x(?<commitmentNote>[0-9a-fA-F]{64})/g
const match = noteRegex.exec(invoiceString)
if (!match) {
throw new Error('The note has invalid format')
}
const netId = Number(match.groups.netId)
const buf = Buffer.from(match.groups.commitmentNote, 'hex')
const commitmentNote = toHex(buf.slice(0, 32))
return {
currency: match.groups.currency,
amount: match.groups.amount,
netId,
commitmentNote
}
}
async function loadDepositData({ amount, currency, deposit }) {
try {
const cachedEvents = await fetchEvents({ type: 'deposit', currency, amount });
@ -1257,6 +1323,27 @@ async function main() {
.option('-R, --relayer <URL>', 'Withdraw via relayer')
.option('-T, --tor <PORT>', 'Optional tor port')
.option('-L, --local', 'Local Node - Does not submit signed transaction to the node');
program
.command('createNote <currency> <amount> <chainId>')
.description(
'Create deposit note and invoice, allows generating private key like deposit notes from secure, offline environment. The currency is one of (ETH|DAI|cDAI|USDC|cUSDC|USDT). The amount depends on currency, see config.js file or visit https://tornado.cash.'
)
.action(async (currency, amount, chainId) => {
currency = currency.toLowerCase();
await createInvoice({ currency, amount, chainId });
});
program
.command('depositInvoice <invoice>')
.description(
'Submit a deposit of invoice from default eth account and return the resulting note.'
)
.action(async (invoice) => {
torPort = program.tor;
const { currency, amount, netId, commitmentNote } = parseInvoice(invoice);
await init({ rpc: program.rpc, currency, amount, localMode: program.local });
console.log("Creating", currency.toUpperCase(), amount, "deposit for", netName, "Tornado Cash Instance");
await deposit({ currency, amount, commitmentNote });
});
program
.command('deposit <currency> <amount>')
.description(