❗️
WARNING
Do not use this in any web / user-facing applications. This will expose the private key.

Usage

// sign a transaction
tronWeb.trx.sign(transaction, privateKey);

Input Parameters

Parameter	Description	Data Type
transaction	The transaction object	JSON
privateKey	The private key used for signing. Optional. The default value is the private key passed in when constructing tronweb object.	String

Example

sign a transaction

const tradeobj = await tronWeb.transactionBuilder.sendTrx("TNo9e8MWQpGVqdyySxLSTw3gjgFQWE3vfg", 100,"TM2TmqauSEiRf16CyFgzHV2BVxBejY9iyR",1);  
const signedtxn = await tronWeb.trx.sign(tradeobj, privateKey);
console.log(signedtxn)
>{ visible: false,
  txID:
   'cbf76171dcf5f8fe00b4911a1a6cc4d2a4448e3348f44d240ca20af06025d0f2',
  raw_data:
   { contract: [ [Object] ],
     ref_block_bytes: '6394',
     ref_block_hash: '8ad966a9b0b6a5d1',
     expiration: 1580983512000,
     timestamp: 1580983453441 },
  raw_data_hex:
   '0a02639422088ad966a9b0b6a5d140c0d7d7cf812e5a65080112610a2d747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e5472616e73666572436f6e747261637412300a15417946f66d0fc67924da0ac9936183ab3b07c811261215418cb2ab880d4fa7b33c9645a2276dc9b192902e2d186470818ed4cf812e',
  signature:
   [ '47b1f77b3e30cfbbfa41d795dd34475865240617dd1c5a7bad526f5fd89e52cd057c80b665cc2431efab53520e2b1b92a0425033baee915df858ca1c588b0a1800' ] }