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In Excel and Word 95 and prior editions a weak protection algorithm is used that converts a password to a 16-bit verifier and a 16-byte XOR obfuscation array [1] key. [4] Hacking software is now readily available to find a 16-byte key and decrypt the password-protected document. [5] Office 97, 2000, XP and 2003 use RC4 with 40 bits. [4]
This is a free software version of UnRAR that uses a library that is based on an old version of RARLAB's UnRAR with permission from author Eugene Roshal. [3] It is probably licensed under the GPLv2-only and unrarlib is available under the GPLv2-or-later or a proprietary license. Work ended in 2007. Unrarlib only supports the RAR2 format. [3]
Several programs can unpack the file format. RARLAB distributes the C++ source code and binaries for a command-line unrar program. [10] The license permits its use to produce software capable of unpacking, but not creating, RAR archives, without having to pay a fee. It is not a free software license.
WinRAR is a trialware file archiver utility, developed by Eugene Roshal of win.rar GmbH. It can create and view archives in RAR or ZIP file formats, [6] and unpack numerous archive file formats.
Three password types can be set in Microsoft Word: Password to open a document [83] Password to modify a document [83] Password restricting formatting and editing [84] The second and third password types were developed by Microsoft for convenient shared use of documents rather than for their protection.
The purpose of password cracking might be to help a user recover a forgotten password (due to the fact that installing an entirely new password would involve System Administration privileges), to gain unauthorized access to a system, or to act as a preventive measure whereby system administrators check for easily crackable passwords. On a file ...
B1 Free Archiver is a proprietary freeware multi-platform file archiver and file manager. B1 Archiver is available for Microsoft Windows, Linux, macOS, and Android. It has full support (compression, unpacking and encryption) for ZIP and its native B1 format. [1] The program decompresses more than 20 popular archive formats. [2]
.doc (an abbreviation of "document") is a filename extension used for word processing documents stored on Microsoft's proprietary Microsoft Word Binary File Format; it was the primary format for Microsoft Word until the 2007 version replaced it with Office Open XML.docx files. [4] Microsoft has used the extension since 1983.