NEW: Rainbow Tables for password-protected Excel spreadsheets

April 16th, 2009 by Olga Koksharova
Category: «Cryptography», «Elcomsoft News», «General», «Security», «Software»

And now…. we have Rainbow Tables for Microsoft Excel docs with 40-bit encryption. So, it became possible to reach near-instant recovery of 97% of spreadsheets created in MS Excel 97-2003. Unfortunately, due to specificity of Excel spreadsheets format it’s unreal to get 100%-recovery, still, you can use brute force to cover the rest 3%.