grader_new.py

flag_prefix = "hexit_mate_"

def get_problem(random):
    flag = flag_prefix + "".join([random.choice("0123456789abcdef") for i in range(20)])
    return flag

def generate(random):
    flag = binascii.hexlify(get_problem(random))
    return dict(variables=dict(flag=flag))

def grade(autogen, key):
    flag = get_problem(random)
    if(key.find("{}".format(flag) != -1):
    	return True, "Yay you dehexed it!"
    return False, "Wrong encoding?"