Rarcrack - how long for the file with 400 MB ?
Hi everyone
I'm trying to get the password in the encrypted file with 400 MB. It's more time I thought.
If someone have used the program, rarcrack, can you tell me know that get the password with special characters ?
For example:
The encrypted file with 400MB + the passwords "?_123_123_abc_@theworld".
How long for that ?
Thank you very much.
Last edited by luckybc (2014-12-26 06:29:07)
Does rarcrack know how long the pass-phrase is or not?
Also, are you using a dictionary/removing obvious choices of pass-phrase to help speed up the process OR are you brute-forcing every single pass-phrase from the ASCII alpha-numeric alphabet + punctuation?
TL;DR: Assuming I've done the Maths correctly, a damn sight longer that you might have thought
Since you haven't said, I'm going to assume YES to the first question and I'm assuming you're brute forcing, to make the maths simpler.
For one character position you're looking at about 26 lower case + 26 upper case + 10 digits + 10 punctuation marks of some sort. So that's 72 characters. You've got 22 characters in the passphrase, so that's a potential of 72^22 = 7.26632672153 x 10^40 pass-phrase combinations.
Now let's assume you're doing this on modern hardware, with an SSD on a single machine which can process something at the rate of 200MB/s. That's two seconds a pass. That'll take you about 2.01842408931 x 10^37 hours.
Disclaimer: I'm working off the assumption that encryption has been used, and that rarcrack would decrypt the whole file on each attempt (pass-phrase protection and encryption are different things...). I don't actually know how it works, but for those that do know how it does, you can probably work out the time from the number of pass-phrase combinations.
Last edited by clfarron4 (2014-12-26 12:01:20)
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