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Aug 2, 2024, 7:45:16 PM8/2/24

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The recent update to Elcomsoft Advanced Archive Password Recovery, our go-to tool for breaking passwords to encrypted archives, brought compatibility with RAR5 and 7Zip formats, and enabled multithreaded dictionary attacks. Which archive formats are the most secure, and which ones are the toughest to break? Read along to find out!

For us, Advanced Archive Password Recovery is a product we have nostalgic feelings for. Under the name of Advanced Zip Password Recovery, it became the first password recovery tool we released back in 1997. Back then, it looked like this:

It all started from breaking a ZIP archive for one of our customers. We made a command-line tool specifically for that archive and were able to brute-force the password. Several months after that, we released the first GUI version of the tool. Once we added more compression formats, we gave the tool its current name, Advanced Archive Password Recovery.

There are generally two encryption standards available for ZIP archives: Zip 2.0 (Legacy) encryption and AES encryption, which, in turn, comes in 128-bit AES and 256-bit AES strengths. WinZip has a comprehensive write-up on ZIP encryption, particularly mentioning the following:

The known plaintext attack enables the decryption of certain types of encrypted ZIP archives without performing a lengthy attack on the original password. Obviously, this attack is only applicable to ZIP archives protected with legacy encryption. AES-encrypted archives are immune to this attack.

The core of this attack is the requirement to have exactly at least one unencrypted file (or part of such file) matching those inside the encrypted archive. If you have a file like that, as well as a ZIP archiver using the same legacy encryption algorithm, you can use the known plaintext attack in Advanced Archive Password Recovery to quickly find the password. Notably, the attack does not need to recover the original plain-text password to decrypt the archive, although shorter passwords can be recovered quickly.

In the RAR4 format, WinRAR employed AES encryption with 128-bit or 256-bit encryption keys. However, the archiver had never checked a password at all when the user attempted to deflate an encrypted archive. Instead, it simply performed the decryption, and only checked the checksum in the end, once the file was fully processed. This made attacks painfully slow: one had to decrypt the whole file to find out whether the password matched or not. For archives containing large files, the attacks were particularly struggling.

According to 7-zip.org, 7Zip encrypts files with AES-256 algorithm in CBC mode. The encryption key is derived using 524288 (2^19^) iterations of the SHA-256 hash algorithm. Interestingly, 7Zip does not currently use salt to further strengthen security of its archives, which seems like a big omission to us.

Advanced Archive Password Recovery recovers passwords and removes protection from ZIP, 7Zip and RAR archives created with all versions of PKZip, 7Zip, WinZip, RAR and WinRAR in their GUI and command-line incarnations. Being a flexible, customizable and highly-optimized password recovery tool, it offers best-in-class performance for recovering the most complex passwords. Guaranteed recovery is often possible for many ZIP archives in less than one hour.

Build high-performance clusters for breaking passwords faster. Elcomsoft Distributed Password Recovery offers zero-overhead scalability and supports GPU acceleration for faster recovery. Serving forensic experts and government agencies, data recovery services and corporations, Elcomsoft Distributed Password Recovery is here to break the most complex passwords and strong encryption keys within realistic timeframes.

Advanced Archive Password Recovery recovers protection passwords or unlocks encrypted ZIP, 7Zip and RAR archives created with all versions of popular archivers. Recover passwords for plain and self-extracting archives created with PKZip and WinZip, 7Zip, RAR and WinRAR automatically or with your assistance. Guaranteed unlocking of archives created with WinZip 8.0 and earlier in under one hour is possible by exploiting an implementation flaw.

Advanced Archive Password Recovery 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.

Supporting a wide range of compression and encryption algorithms, all versions of popular archivers and multiple archive formats, Advanced Archive Password Recovery comes as close to being a truly universal recovery tool as no one else.

Certain ZIP and ARJ archives can be unlocked and decrypted in just minutes, provided that you have at least one unprotected file from that archive at your discretion. It does not matter how long and complex the password is! If you have a file from the encrypted ZIP archive in your hands, the whole archive can be usually unlocked in minutes by applying the known-plaintext attack. Similar ARJ archives are unlocked instantly. Fast recovery available only in case of "classical" encryption, not AES.

Advanced Archive Password Recovery supports latest encryption technologies, including the complex AES encryption used in WinRAR, 7Zip and the recent versions of WinZip. Advanced Encryption Standard (AES) is a strong cipher used as an encryption standard by the U.S. government, military and Special Forces. AES has been extensively analyzed by cryptography specialists worldwide, and is a proven international standard for strong data protection.

Most passwords used by human beings are based on a single word or a combination of words from a certain language. Before reverting to the brute force attack, Advanced Archive Password Recovery performs a full-scaled comprehensive attack based on a dictionary. Use a small built-in dictionary or specify your own dictionaries no matter the language, and Advanced Archive Password Recovery will attempt single words and word combinations in different cases and variations.

Uninstallation procedure: in order to uninstall the product, follow the standard procedure via Control Panel - Programs and features or use the corresponding Unistall link from the product's folder in the Windows Start menu.

Recovery of a strong password is basically brute force attacking passwords from a given range of words. Accent RAR Password Recovery employs a highly optimizedsource code to ensure the highest speed performance on any modern CPU, no matter is it is Intel or AMD.

To further boost the recovery speed, Passcovery enables support for multiple graphics cards that can be connected to the search. Accent RAR Password Recovery scales upthe calculations by engaging all NVIDIA or AMD graphics cards available in the system.

Accent RAR Password Recovery allows to configure characters sets individually for each position of the generated password and try only those passwords that meet thecriteria defined with the extended mask option.

With Accent RAR Password Recovery you can combine up to four dictionaries and change the generated passwords according to your customized mutation rules. The rules aredefined with the help of built-in macro language implemented in the "Rule Editor" which allows to preview the changes as you go.

Payment transactions initiated from this website are strictly confidential and secure. Various on-line and off-line payment methods are available.Payment methodsВ for eachВ region/country are available at the order page.

Looking for an easy and tried-and-tested way to remove a forgotten Excel password? It's right here. You are about to learn how to decrypt an Excel file online withoutadditional software or special technical skills.

Discover how to effectively manage password-protected archives and how to make the process of finding lost passwords as efficient as possible for robust security. Here we delveRAR archives and the WinRAR archiver, and ZIP archives and the 7-Zip archiver.

The new release brings an updated line of Windows programs for password recovery supporting GPU acceleration. What has been added is support for the latest families of graphicscards, improved password recovery on the highest end GPUs and boosted brute force attack on passwords with SHA512 encryption algorithms.

AccentRPR offers three types of attack for recovering passwords: brute force, mask and dictionary attacks. Each type of attack has its pros and cons (learn more). Dictionary attacks are usually the most practical approach, saving time by limiting the search to the most likely passwords.

Experienced users can create their own recovery scenarios using a special feature of AccentRPR. Scenarios allow users to define a set of rules that are used by the program to search for the password and flexibly control the arrays of checked values.

Accent RAR Password Recovery uses a macrolanguage to describe password mutation rules for dictionary attacks. This makes it easy to tweak passwords, add words and symbols, and combine passwords from multiple dictionaries. This approach cracks passwords like "pa55word" or "VeryStrongPassword1234" much faster than other options. This option will be useful for forensic computing professionals and law enforcement.

Payment is available via various online and offline methods. The full list of options depends on the region and is available on the order page. All transactions related to license purchases for software are secure and strictly confidential.

Passcovery Suite supports Microsoft Office and OpenOffice documents, Zip and RAR archives, Apple and Blackberry backups, encrypted TrueCrypt volumes and WPA/WPA2 handshakes. The software works on AMD/NVIDIA video cards and guarantees the highest possible password recovery speed on any computer.