text: 
  function Decrypt( key, cipherText ){
  
    var dnaBases = [];
    var _cipherText = cipherText.split( '' );
    var binJoined = '';
  
    _cipherText.forEach(function(element) {
      binJoined = binJoined + Helper.fromRNABase( element );
    });
    binJoined = Helper.xor( binJoined, Helper.keyToBin(key) );
  
    var bin = Helper.partition( binJoined, 8 );
  
    var dec = [];
    var plaintext = '';
  
    bin.forEach(function(element) {
      dec.push( parseInt( element, 2 ) );
    });
  
    for( x=0; x<dec.length; x++ ){
      plaintext = plaintext + String.fromCharCode( dec[x] );
    }
    
    return plaintext;
  
  }