It doesn't seem difficult to generate all 8 character alphanumeric strings, but the 30 seconds it takes to generate the scrypt hash is the real challenge here.
218 trillion combinations. Roughly 69 million years to generate hashes on even half of that space.
Essentially, you need to find a hole in the algorithm, right?
1: https://www.wolframalpha.com/input/?i=%28%28%2826%2B26%2B10%...
I don't think it's worth my time unless I managed to find enough hardware to do at least 100k attempts a second. Scrypt is executed on the CPU and the PBKDF runs on the GPU, then the GPU sits around and waits for the CPU to get it's job done before XORing the results. I considered making a pool, but there's no way of knowing if people are being truthful when submitting solutions.
It's a pity scrypt is designed to be hard to implement on hardware, or I'd have a crack at it with some FPGAs.
http://crypto.stackexchange.com/questions/11786/a-key-deriva...
Shoutout to Max Krohn for actually asking though :)
In any case, that definitely won't work. I'd run out of hard drive space on the server it's running on before it got close to being solved.
