42 lines
1.0 KiB
TypeScript
42 lines
1.0 KiB
TypeScript
import EthTx from 'ethereumjs-tx';
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import { ecsign, sha3 } from 'ethereumjs-util';
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import { RawTransaction } from 'libs/transaction';
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import { isValidRawTx } from 'libs/validators';
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export function signRawTxWithPrivKey(
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privKey: Buffer,
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rawTx: RawTransaction
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): string {
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if (!isValidRawTx(rawTx)) {
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throw new Error('Invalid raw transaction');
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}
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const eTx = new EthTx(rawTx);
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eTx.sign(privKey);
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return '0x' + eTx.serialize().toString('hex');
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}
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export function signMessageWithPrivKey(
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privKey: Buffer,
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msg: string,
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address: string,
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date: string
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): string {
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const spacer = msg.length > 0 && date.length > 0 ? ' ' : '';
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const fullMessage = msg + spacer + date;
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const hash = sha3(fullMessage);
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const signed = ecsign(hash, privKey);
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const combined = Buffer.concat([
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Buffer.from(signed.r),
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Buffer.from(signed.s),
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Buffer.from([signed.v])
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]);
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const combinedHex = combined.toString('hex');
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return JSON.stringify({
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address,
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msg: fullMessage,
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sig: '0x' + combinedHex
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});
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}
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