I would like to bypass the lock on a .rar archive, is this possible?
closed as off topic by mikewhatever, Ringtail, hhlp, Mitch, Mik Nov 24 '12 at 17:21
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AES is impractical to break.
This is impossible by definition. RAR uses pretty good cryptography, in fact 128-bit AES, which has insofar never been cracked via cryptanalysis or brute-force. You may want to try to find another format of the same archive with no security or one that is trivial to break, since this one will not be breakable.