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The primary goal of cRARk is to- recover your forgotten password on RAR archives.
Any Rar/WinRar versions 2.x-5.x are supported.
cRARk is the tool for professionals, it uses command-line interface, has no GUI.
cRARk is the freeware utility for Win32/64, Linux, Mac OS.
Features and limitations
Advantages of cRARk are:
- Absolutely free
- All RAR versions support, including the latest RAR 5.x
- One of the fastest RAR password recovery software, with the optimization for latest x86 instructions: AVX2, AVX, XOP, AES-NI for Intel and AMD processors
- Support of GPU password recovery on NVIDIA and AMD GPUs using CUDA and OpenCL technologies
- Multi-volume, self-extracting, encrypted header archives support
- Unique PDL language which is extremely efficient if user remembers any information about a forgotten password
- Any (European) language support with native Unicode implementation
- Portability (Windows, Linux, Mac OS versions are available)
- No GUI, pause/resume feature etc
- No multi-core support, only one CPU or GPU is used
- Password length is limited to 28 symbols
RAR security overview
RAR/WinRAR archiver version 2.x used its proprietary, but rather strong encryption algorithm. At least no RAR 2.0 attacks were known except brute force for password recovery.
Starting from version 3.0, RAR has been using a strong AES algorithm, which also doesn't allow any attacks more effectivethan the brute force. Besides, the key derivation function uses more than 70000 SHA-1 transformations and brute force rate on modern CPU is very low,only several hundreds of passwords per second.
RAR 5.0 encryption is quite the same, using PBKDF2 key derivation with SHA-256 hash and the rate is even slower (in 25-100% on differenthardware comparing to RAR 3.0). This means that RAR password encryption is one of the strongest between popular encryption systems in the context of brute force rate.