function isPrime(n) {
	            var sqrtN = Math.sqrt(n);
	            for (var factor = 2; factor <= sqrtN; factor++) {
	                if (!(n % factor)) {
	                    return false;
	                }
	            }

	            return true;
	        }
Shortcut function to the HMAC's object interface.

@param {WordArray|string} message The message to hash.
@param {WordArray|string} key The secret key.

@return {WordArray} The HMAC.

@static

@example

    var hmac = CryptoJS.HmacSHA1(message, key);