01-24-2020, 11:26 AM
Considering your previous posts, you seem to be new to password cracking and therefore are lacking necessary background knowledge (which is not a shame, everyone started at some point). You should do some research about the differences between Hashing and Encryption, as well as how both of them are usually used together.
A short answer: Hash functions are used to derive keys for encryption by considering your password and in most cases some other random data, which is called salt. If you are trying to crack a single hash, this is not important for you, as it does not have an impact on performance.
Important in your case is that hash functions may be applied multiple times to finally derive the encryption key. This means in order to check if a password is correct, you might have to compute e.g. sha256(sha256(...sha(pw|salt)...)), potentially up to 200,000 times to check a single password.
This should also answer your question from your other thread, why it is not possible use plain sha256 (-m 1400) in order to crack a 7z hash.
A short answer: Hash functions are used to derive keys for encryption by considering your password and in most cases some other random data, which is called salt. If you are trying to crack a single hash, this is not important for you, as it does not have an impact on performance.
Important in your case is that hash functions may be applied multiple times to finally derive the encryption key. This means in order to check if a password is correct, you might have to compute e.g. sha256(sha256(...sha(pw|salt)...)), potentially up to 200,000 times to check a single password.
This should also answer your question from your other thread, why it is not possible use plain sha256 (-m 1400) in order to crack a 7z hash.