git.iko.soy/bridge
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bridge/src/lib/ledger.js
24 lines 755 B history raw
1import Transport from '@ledgerhq/hw-transport-u2f';
2import Eth from '@ledgerhq/hw-app-eth';
4const LEDGER_LEGACY_PATH = "m/44'/60'/0'/x";
5const LEDGER_LIVE_PATH = "m/44'/60'/x'/0/0";
7const chopHdPrefix = str => (str.slice(0, 2) === 'm/' ? str.slice(2) : str);
9const ledgerSignTransaction = async (txn, hdpath) => {
10 const transport = await Transport.create();
11 const eth = new Eth(transport);
13 const path = chopHdPrefix(hdpath);
14 const serializedTx = txn.serialize().toString('hex');
15 const sig = await eth.signTransaction(path, serializedTx);
17 txn.v = Buffer.from(sig.v, 'hex');
18 txn.r = Buffer.from(sig.r, 'hex');
19 txn.s = Buffer.from(sig.s, 'hex');
21 return txn;
22};
24export { LEDGER_LIVE_PATH, LEDGER_LEGACY_PATH, ledgerSignTransaction };