node-sendRawTransaction

1、区块链离线签名：（具体用法）

const ethTx = require('ethereumjs-tx');
const txData = {
    nonce: '0x9',
    gasPrice: '0x4a817c800',
    gasLimit: '0x5208',
    to: '0x3535353535353535353535353535353535353535',
    value: '0xde0b6b3a7640000',
    data: '',
    v: '0x1b', // Ethereum mainnet chainID 27 1b or 28 1c(测试链和主链不同,rinkeby为0x2b,如不懂可以提issue)
    r: 0,
    s: 0
  };
  
    tx = new ethTx(txData);
    
    //①测试--->RLP(序列化)
    console.log('RLP-Encoded Tx: 0x' + tx.serialize().toString('hex'))

    //②测试--->hash（哈希）
    txHash = tx.hash();
    console.log('Tx Hash: 0x' + txHash.toString('hex'))

    //③测试--->Sign（离线签名）
    const privKey = Buffer.from('4646464646464646464646464646464646464646464646464646464646464646', 'hex');
    tx.sign(privKey);
    serializedTx = tx.serialize();
    rawTx = 'Signed Raw Transaction: 0x' + serializedTx.toString('hex');
    console.log(rawTx)

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