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leo-stone / hack-petya

search key to restore petya encrypted mft
The Unlicense
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Don't use genetic algorithms #3

Closed klondi closed 8 years ago

klondi commented 8 years ago

Hi @leo-stone I have published a blogpost with a propper cryptanalisys of the Salsa-20 version used by Petya as it is implemented by your code. In the end you'll find a more efficient method to get back the key (in O(1)) without the need of using genetic algorithms. I hope it helps.

The blogpost can be found at https://klondike.es/klog/2016/04/12/cryptanalyzing-petya/

leo-stone commented 8 years ago

Hi klondike, I've accomplished what I needed. I am not a cryptographer, and I have many other things waitn 4 me. I won't touch any of this code anymore .... But thank you very much for the analysis, that is the part I did not even remotely have the time for.....