CD-key generator & validator based on username

CD-key generator

import random
__author__ = 'sage'


def main():
    print('________________')
    print('CD key generator')
    print('________________')
    print('')
    username = input('Username? ')
    numberofkeys = input('How many keys? ')
    generate(username, int(numberofkeys))

def generate(username, numberofkeys):
    total = 0

    for letter in username.lower():
        total += ord(letter)*1.03

    gemiddeldeusername = round(total/username.__len__(), 0)

    print('')

    for index in range(0, numberofkeys):
        average = 0
        cdkey = ''

        for i in range(0, 5):
            while gemiddeldeusername != average:
                first = random.randrange(97, 97 + 26)
                second = random.randrange(97, 97 + 26)
                third = random.randrange(97, 97 + 26)
                fourth = random.randrange(97, 97 + 26)
                fifth = random.randrange(97, 97 + 26)
                average = (first+second+third+fourth+fifth)/5
            average = 0

            if i != 0:
                cdkey += '-'

            cdkey = cdkey+chr(first) + chr(second)+chr(third)+chr(fourth)+chr(fifth)

        print(cdkey)
        cdkey=''

if __name__ == "__main__":
    main()

CD-key Validator

__author__ = 'sage'

class Security:
    def checkkey(self, username, cdkey):
        total = 0
        for letter in username.lower():
            total += ord(letter)*1.03

        gemiddeldeUsername = round(total/username.__len__(), 0)

        for piece in cdkey.split('-'):
            totalpiece = 0
            for letter in piece:
                totalpiece += ord(letter)

            if totalpiece/piece.__len__() != gemiddeldeUsername:
                return False

        return True