This is a password recovery tool for PDF documents.
PDF documents have the means of using owner and user passwords. Typically most paid for documents will have these set. The problem often is that when you get to read the documents after a long time you may have lost or forgotten the passwords and then it is quite an aggravation to try and read these. Frustration increases as you try several things unsuccessfully. This tool has several attack modes to recover the passwords and it is up to the user to choose one. If you have forgotten everything about the password the smart attack or the brute-force method could be the best. Here the tool will actually try all possible combinations of characters. This can take time and the acceleration of the utility offered when specific graphic cards are used, could be a boon in this mode. In fact, it should be useful for all the other type of attacks too.
If you do remember parts of the password then the brute force mask attack could be used. Dictionary based approach also is available. The utility is designed to speed up as you start using the multicore processors. The recovery process could be carried over on more than one session by saving the status of one session and then resuming from the same point later. The interface is quite intuitive and simple to use. No particular skill will be required of the user. The recovery status indicator is useful. The event log tells you if there are any issues during the recovery run. These recovery sessions need not be attended. One could simply ask the machine to switch off after the work is done. This is a very good product and is a good option when you have a need for a tool like this. Go ahead and try it out in your exact work settings.