Bitwise XOR between two Buffers or Strings, returns a Buffer
npm install bitwise-xor 
Returns a Buffer of the result of bitwise XOR operation between two
Buffers or Strings
javascript
var xor = require('bitwise-xor');xor(new Buffer('00ff', 'hex'), new Buffer('3344', 'hex'))
// returns
`Install
npm install bitwise-xor`