bitcore-payment-codes-cash/lib/xor.js

Payment Codes (BIP47) support for Bitcoin Cash

// From https://github.com/czzarr/node-bitwise-xor/blob/master/index.js
function xor(a, b) {
  if (!Buffer.isBuffer(a)) a = new Buffer(a)
  if (!Buffer.isBuffer(b)) b = new Buffer(b)
  var res = []
  if (a.length > b.length) {
    for (var i = 0; i < b.length; i++) {
      res.push(a[i] ^ b[i])
    }
  } else {
    for (var i = 0; i < a.length; i++) {
      res.push(a[i] ^ b[i])
    }
  }
  return new Buffer(res);
};


module.exports = xor;