Python generate all possible strings of length n [duplicate]

Question

I am learning ethical hacking. I have the hash key of a password and the crypt algorithm (sha256/sha512). I want to parse all the strings from a file and to check if the hash of the password matches the hash of each of the string from the file.

The generated String may contain small letters, big letters and numbers.

Any ideas how to generate all the possible Strings of length n which may contain letters and numbers?

Answer 1

Here's a piece of code that uses [Python 3.Docs]: itertools.product(*iterables, repeat=1).
Note that the number of generated strings is 62 ** length, so for testing purposes use small values for length:

import string
import itertools


def generate_strings(length=3):
    chars = string.ascii_letters + string.digits  # "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
    for item in itertools.product(chars, repeat=length):
        yield "".join(item)

Answer 2

You could use itertools.product:

print([''.join(x) for x in itertools.product('abcABC123', repeat=3)])
['aaa',
 'aab',
 'aac',
 'aaA',
 'aaB',
 'aaC',
 'aa1',
 'aa2',
 'aa3',
 'aba',
...

Just add the remaining characters you need to the input string. You can use the constants from the strings module for this.

Be aware that this quickly grows. ;)