Can anyone solve this code ?

Question

Case Study: Script to Calculate Possible Password Combinations (keyspace) - Need help figuring this out

The script should run but not do much yet!

Now add your own code to your script, to calculate the ascii character combinations a brute force attack would need to try to exhaust the keyspace (using your code from above). The calculation is similar to the combinations of bits, but instead of a character set of two bits (0,1), ASCII has 95 (printable characters).

Below is the code:

def get_keyspace(passwd):
"""print the entropy value for an ascii password"""
print('[*] keyspace')
char_set = 4
keyspace = 4 # ... REPLACE WITH YOUR CODE HERE ...
print(f'[*] Password: {passwd} - Total {keyspace} key combinations')

# test case
passwd = 'testings' # change the passwd variable to test
# call keyspace calc function
get_keyspace(passwd)

Answer 1

The following code should help solve your problem.

I just don't fully understand the code you shared and ASCII contains 128 characters instead of 95. The get_keyspace function looks like it should print all the password combinations but then I don't know why a single password is passed as parameter to it instead of just a length.

The following code defines a generator that iterates over all combinations of a given alphabet for the requested length. You can change the alphabet to whichever 95 characters you care about.

alphabet = ' -_.,!@#$%^&*()[]{}<>;:+?|0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'

def get_bruteforce_combinations_of_length(length):
if length == 0:
yield ''
else:
for i in range(len(alphabet)):
prefix = alphabet[i]
for suffix in get_bruteforce_combinations_of_length(length - 1):
yield prefix + suffix

# print all possible 2 character passwords.
for password_guess in get_bruteforce_combinations_of_length(2):
print(password_guess)