[Web4lib] locked Adobe Acrobat files

[Bob Rasmussen]

On Mon, 15 Aug 2005, Leigh Mihlrad wrote:

> Hi,
>
> I was curious if anyone ever had experience with an Adobe Acrobat file
> that had been locked by its sender, but which the sender no longer had
> the password for? Is there a way to unlock a file like this on the
> receiving end if the person who sent it does not know the password? I
> am using Adobe Acrobat 7.0 Professional.

I believe brute force would be the only option. The default in PDF files
is to use RC4 encryption and MD5 hashing.

Regards,
....Bob Rasmussen,   President,   Rasmussen Software, Inc.

personal e-mail: ras at anzio.com
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