Quote:
Originally Posted by AustinSchuh
Good statistic! You could shrink that number significantly if you equipped those computers with Nvidia graphics cards and off boarded the computation to them. But still, there is no way we are going to get past the encryption. 10^18 or 10^17 years are still a lot and definitely not worth it.
I don't remember how the PDF's are encrypted (Probably the highest level), but the lowest level of encryption can be broken in a day or two.
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That is a very rough calculation based on Distributed.net's brute force crack of RC-64
I am fairly certain that they used AES encryption last year which is a minimum 128bit key. From what I can see all of the "PDFCrack" tools claim to be able to brute force 40 bit keys (not AES) in 2-4 days.