tbb.xorcrypt

gistfile1.txt

(function(window) {
    'use strict';
    var asByte = function(byte) {
        var bytes = [];
        for (var i = 0; i < this.length; ++i) {
            bytes.push(this.charCodeAt(i));
        }
        return bytes;
    };
    function asString(array) {
        var result = "";
        for (var i = 0; i < array.length; i++) {
            result += String.fromCharCode(array[i]);
        }
        return result;
    }
    var xor = function(array1, array2) {
        var length = (array1.length > array2.length) ? array1.length : array2.length;
        var array = []
        for (var i = 0; i < length; i++) {
            var value1 = (i < array1.length) ? array1[i] : 0;
            var value2 = (i < array2.length) ? array2[i] : 0;
            var value = value1 ^ value2;
            array.push(value);
        }
        return array;
    }

    var xorcrypt = function(target, key) {
        return asString(xor(asByte(target), asByte(key)));
    }
    var xordecrypt = function(target, key) {
        return xorcrypt(target, key);
    }
    if (window.tbb == undefined) {
        window.tbb = {};
    }
    window.tbb.xorcrypt = {
        crypt : xorcrypt,
        decrypt : xordecrypt
    }
})(window);