shubhanshujha / brute-force-password-cracker

A brute force attacker built in Python 3.

Brute-Force Password Cracker

The brute-force password cracker is an application written in C#, C++, Kotlin, and Python that brute forces a password that you pass to the function. Read more about brute force password crackers here.

The general idea is that it checks every possible character combination repeatedly until it matches the provided string. Note: Built into the Kotlin version are coroutines that have it check multiple lengths of a string at a time for as many cores as the processor you're using has. You can disable this feature and just have it run one length at a time. I've found that using multiple cores can speed up the overall process as it makes it easier for it to guess longer lengths faster.

Example output with coroutines:

a
aa
aaa
aaaa
b
ab
aab
aaab

Example output without coroutines:

a
b

Performance:

Here are the performance statistics that I found on my Intel i5-4460 @ 3.20GHz. Each program was tasked with cracking the password zzzzzz. These should give you a rough estimate of how fast the program is in each language. The Python version does not include statistics (such as duration or passwords / second) but those will be added soon. Kotlin had a few issues compiling with coroutines, so I'll get those statistics as soon as I can compile it 😂. (hint: if you're language-agnostic, use C++) Here's the results:

C#:

Duration: 12 seconds

Passwords / second: 26,772,698

C++:

Duration: 6.31 seconds

Passwords / second: 50,914,804

Python:

Duration: > 5 minutes

Passwords / second: coming soon...

Kotlin:

Statistics coming soon...