var stringToHex = function(str) {
    var hex, i;
    var result = "0x";
    for (i = 0; i < str.length; i++) {
        hex = str.charCodeAt(i).toString(16);
        result += hex;
    }
    return result
}

var hexToString = function(hex) {
    var i;
    var hexes = hex.match(/.{1,2}/g) || [];
    var result = "";
    for(i = 0; i < hexes.length; i++) {
        result += String.fromCharCode(parseInt(hexes[i], 16));
    }

    return result;
}

module.exports = { stringToHex, hexToString }