generate-id.js

convertDecimalToBase = function (decimal, base) {
	var symbols = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".split("");
	var conversion = "";

	if (base > symbols.length || base <= 1) {
		return false;
	}

	while (decimal >= 1) {
		conversion = symbols[(decimal - (base * Math.floor(decimal / base)))] + conversion;
		decimal = Math.floor(decimal / base);
	}

	return (base < 11) ? parseInt(conversion) : conversion;
}

reverseString = function reverse(s) {
	return s.split("").reverse().join("");
}

padString = function(width, string, padding) { 
	return (width <= string.length) ? string : padString(width, padding + string, padding);
}

encodeString = function(binaryString) {
	var reversedBinaryString = reverseString(binaryString);
	var decimal = parseInt(reversedBinaryString, 2);
	var encodedString = convertDecimalToBase(decimal, 36);
	
	return encodedString;
}

decodeString = function(encodedString) {
   var decodedString = parseInt(uniqueId, 36);
   var binaryString = decodedString.toString(2);
   
   binaryString = padString(32, binaryString, "0");
   
   var reversedBinaryString = reverseString(binaryString);

   return reversedBinaryString;
}

// String representing the GIF states (0 = locked, 1 = unlocked)
var binaryString = "00011111111111111111111111110000";
console.log("Binary String: " + binaryString);

// Generate ID
var uniqueId = encodeString(binaryString);
console.log("ID: " + uniqueId);

// Get binary string from ID
var decodedId = decodeString(uniqueId)
console.log("Decoded ID:" + decodedId);