That means the larger the archive, the more time it takes to validate the password. When testing each password from a given range the password cracker every time completely unpacks the archive. It works fast (and even faster on graphics cards).īut if the headers are not encrypted and the compression method is “Store” you will have to decrypt the entire archive and compare its checksums with the reference ones.Īnd in this case the size of an archive is of great importance.ĭo you remember how long it took to archive your huge file? Well, now the process is reverse.

Then the key can be used to decrypt either the headers or just the initial part of the archive. It would also be good if an archive was created with compression (any method other than the “Store” one). To validate a RAR file it is necessary to convert a password into a key and then decrypt something from the archive and check the result. The biggest trouble is the “Store” option – a method without any compression (an archive is a container that stores files in their original size). When creating a RAR file you can choose from the six compression methods available: Fig. Effects of compression method and file size on the speed of RAR password cracking If the “Stored” compression method is used then what is the size of the archive itself?Īll these factors affect the speed of password attack.If the headers are not encrypted then what is the compression method?.If it’s RAR3 then what about the headers – are they encrypted or not? ( encrypted ones are easier to process).What is the version of archive - RAR3 or RAR5? ( RAR5 is easier to crack).Each RAR archive is unique and this uniqueness is due to the following: It is very different from all the other formats supported by our Passcovery Suite. In regards to password cracking the RAR format is unpredictable. What is the problem, its effects and how to solve it – find all the answers in this article! The naughty nature of RAR Sometimes users with graphics cards may end up with this kind of freeze: Fig 1. However when it comes to RAR files a misfire may occur. Here at Passcovery we compare different GPUs and present a ranking based on their password recovery performance.īasically our ranking is an unbiased chart of the best GPUs to crack passwords with.

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