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Unread 05-01-2012, 21:49
davidthefat davidthefat is offline
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AKA: David Yoon
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Re: Encrypted morally grey

In all seriousness. The password is encrypted with MD5 encryption 50 times over and RC4 20 time over or something like that. I thought I had something going on, but it was a dead end.

The hashed passwords are all there in the PDF, and the knowledge of encrypting and decrypting are published by Adobe themselves. They literally give you step by step instructions (so that 3rd party developers can make PDF readers) The catch is that MD5 encryption cannot be reversed. The way they check if the password is correct is by encrypting the password inputted by the user and checking that against the hashed password in the PDF file.
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