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ARCHPR features ultimate compatibility among the various types of archives, knows weaknesses of certain types of protection, and provides best-in-class performance in unlocking all types of archives.
Features and Benefits
• | Supports all versions of ZIP/PKZip/WinZip, RAR/WinRAR, as well as ARJ/WinARJ, and ACE/WinACE (1.x) |
• | Guaranteed recovery of archives in under 1 hour for ZIP archives created with WinZip 8.0 and earlier and containing at least 5 files |
• | Supports archives over 4 GB and self-extracting archives |
• | Supports strong AES encryption found in WinRAR and the new versions of WinZip |
• | Exploits all known vulnerabilities and implementation flaws in the various compression algorithms for faster recovery |
• | Speedy known-plaintext attack recovers certain ZIP and ARJ archives in minutes (user must supply at least one unprotected file from that archive) |
• | Interrupt and resume operation at any time |
• | Supports background operation by utilizing idle CPU cycles only |
• | Dictionary and brute-force attacks with user-defined masks and advanced templates |
• | Highly optimized low-level code for optimum performance |
Please note, however, that for the password is not stored anywhere in the archive (ZIP/RAR/ARJ/ACE file), and so it cannot be just extracted or decrypted. Instead, ARCHPR can recover it by trying different passwords: all possible combinations in a given range, or from a wordlist, etc. ARCHPR can test as many as ten to thirty million passwords per second (for ZIP archives), and so the likelihood of finding a valid one is very high. There is still no guarantee that the password will be recovered, but here the human factor plays its role: most people use short and/or easy to remember passwords. We estimate the success rate as 90-95%.
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