Brute force attack is faster than a dictionary attack. When and why?
The reason in speed of breaking of ZIP archives with classical encryption.
A dictionary attack will be slower than a brute force attack for formats at high speed of recovery of passwords. The matter is that reading and preparation of passwords from the file of the dictionary demands much more time, than validation of passwords.
For formats at low speed of restoration (and now it honor all formats) a difference in speed between attack according to the dictionary and attack of a brute force it will not be appreciable as validation of passwords takes more time, than reading/preparation of passwords from the dictionary file.
Formats where attack according to the dictionary will be more slowly, than attack of a brute force:
- Zip-archives with classical encryption
- Microsoft Office 97-2003 documents
Formats where speed of attack according to the dictionary will be same as at attack of a brute force:
- Zip archives with WinZip AES enciphering
- Rar3/Rar5 archives
- OpenOffice, Microsoft Office 2007-2016, Adobe PDF documents
- TrueCrypt volumes
- Apple iOS/BlackBerry OS backups
- WPA/WPA2 handshakes
About types of password attacks
Dictionary attack. Passwords are read out from the dictionary file - the usual text file where it is row-wise words passwords are written down. The program for recovery of passwords consistently reads out these words passwords and checks them.
Brute force attack (direct search). Passwords are generated by the program for password recovery from the set of symbols specified by the user and checked right then. Optionally attack of a brute force can use a password mask - a template for creation of passwords.
Passcovery Suite for password recovery
Passcovery Suite restores passwords for files of popular formats. Provides acceleration of search of passwords on the videocards AMD/NVIDIA. Offers enhanced features for carrying out attack according to the dictionary and attacks of a brute force: work scenarios, mutation of the dictionaries, expanded mask. The program restores/deletes a number of passwords instantly.