On 26/11/14 20:41, jonathon wrote: > Once upon a time, there was an extension that did password recovery. I > don't know how well it works/worked. I couldn't find it, when I searched > the LibreOffice and Apache OpenOffice archives today.
Found it: http://sourceforge.net/projects/ooomacros/files/PasswordCracker/Version 1.0/ This is for either OOo 1.1.x, or OOo 2.x. It won't work for LibreOffice 3.x or LibreOffice 4.x If one expects to crack the password within a reasonable period of time, one has to know some basic information about the forgotten password. ### 1,114,112 glyphs that can be theoretically utilized 2048 characters per password 1.289106802e+12384 potential passwords to check. Worst case scenario is 2.452638512e+12378 years, at one password per second. Theoretically, it will be obtained within 1.25e+12378 years. The required time will decrease, as the number of passwords checked per second increases. Using a currently available brute force decryption macro for OOo, it will take 2.554831784e+12375 years for the worst case scenario, and roughly 1.225e+12375 years in the average scenario. If the number of glyphs is restricted to 128, and the password length is restricted to 8 characters, then your worst case scenario is 5.238909443e+16 potential passwords, which can be decrypted in 1.038279554e+8 years (worst case scenario) or 5.191397771e+7 years, in the average situation, at 16 passwords per second. jonathon -- To unsubscribe e-mail to: [email protected] Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted
