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  2. Microsoft Office password protection - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Office_password...

    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]

  3. List of PDF software - Wikipedia

    en.wikipedia.org/wiki/List_of_PDF_software

    Default PDF and file viewer for GNOME; replaces GPdf. Supports addition and removal (since v3.14), of basic text note annotations. CUPS: Apache License 2.0: No No No Yes Printing system can render any document to a PDF file, thus any Linux program with print capability can produce PDF files Pdftk: GPLv2: No Yes Yes

  4. Locklizard - Wikipedia

    en.wikipedia.org/wiki/Locklizard

    LockLizard Limited is a British software company that specializes in digital rights management (DRM) security for PDF documents, USB flash drives and eBooks. [1] It was founded in 2004 by Trevor Mathews to provide Document DRM software that uses encoding and encryption to protect against unauthorized copying, sharing, unlimited printing or ...

  5. Microsoft Word - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Word

    Opening a Word Document file in a version of Word other than the one with which it was created can cause an incorrect display of the document. The document formats of the various versions change in subtle and not-so-subtle ways (such as changing the font or the handling of more complex tasks like footnotes).

  6. Antiword - Wikipedia

    en.wikipedia.org/wiki/Antiword

    Antiword is a free software reader for proprietary Microsoft Word documents, and is available for most computer platforms. Antiword can convert the documents from Microsoft Word version 2, 6, 7, 97, 2000, 2002 and 2003 to plain text , PostScript , PDF , and XML / DocBook (experimental).

  7. File locking - Wikipedia

    en.wikipedia.org/wiki/File_locking

    For example, a lock file might govern access to a set of related resources, such as several different files, directories, a group of disk partitions, or selected access to higher level protocols like servers or database connections. When using lock files, care must be taken to ensure that operations are atomic. To obtain a lock, the process ...