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Lost my zip file password

What can I do to recover my zip file password? is there any way to remove the password from the file?
2 Solutions
Rich RumbleSecurity SamuraiCommented:
There are two methods for recovery, one is called a "known plain-text" recovery, and the other is really just brute-force.
Here is a little on Known Plain-Text
And here are utilites that can do both BF and KPT
Try this, there is a free download, but you can use it against a password protected ZIP and find the password using the demo:


and type in "cracking".
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Zip password can be recovered by these to common method brute-force and dictionary.
To recover the password from the zip file download PicoZip Recovery Tool program from http://www.picozip.com/prt/index.html which is free.First try using dictionary which is faster than brute-force if you still did not get the password try brute-force.
wcokaAuthor Commented:
my problem is that the paswword is about 12 characters
Rich RumbleSecurity SamuraiCommented:
Known-Plain Text attacks are faster than brute-force, Elcomsoft has a good zip recovery program to do both brute force or known plain-text recovery. With a known-plain-text you have to have a file or document that is identical to one in the zip file, no changes in the files data. Otherwise your stuck doing brute-force. You can "speed up" the brute force by specifing a range like 10-12 characters. That will take a long time... which is good for security purposes, but bad for recovery purposes.

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