Microsoft Office Encrypted Document 2007 Onwards

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presentation

A Microsoft Office - Word, Excel, or PowerPoint document, that has been encrypted. The encrypted document conforms to the MS-OFFCRYPTO specification, as found here: http://msdn.microsoft.com/en-us/library/cc313071(v=office.12).aspx The document is an OLE2 compound that contains a number of files: EncryptionInfo - This file contains information used by the Office-compatible application to decrypt the encrypted package. There are multiple variants of this file, as described in 2.3.4.5, and 2.3.4.6 of the format specification. EncryptedPackage - This file contains the whole of the encrypted document. DataSpaces folder (and sub-files) - This structure associates protected content with data space definitions. The data space definition, in turn, describes the series of transforms that must be applied to that protected content to restore it to its original form. Since the method of identifying and distinguishing specific types of OOXML documents relies on seeking and analysing specific elements within the document, and in the case of encryption this information is obfuscated, it does not currently seem possible to determine with any specificity whether an encrypted file is either an Excel, Word, or PowerPoint document, apart from the file extension.

Identify it

Extensions	`.xlsx.pptx.docx`
PRONOM	`fmt/494`

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Open it

Listed for the family; check that the software handles this version.

LibreOfficeOpen sourcereads and writes · MPL-2.0
LibreOfficeOpen sourcewrites · Mozilla Public License, version 2.0
LibreOffice ImpressOpen sourcereads and writes · Mozilla Public License, version 2.0
LibreOffice WriterOpen sourcereads and writes · Mozilla Public License, version 2.0
PandocOpen sourcereads and writes · GPL-2.0-or-later
Q141674354Open sourcereads and writes · Apache Software License 2.0 / MIT License
Q220993Open sourcereads and writes · GNU General Public License, version 2.0 / GNU General Public License, version 3.0
AbiWordOpen sourcereads · GNU General Public License, version 2.0 or later
anydocOpen sourcereads · MIT License
Apache TikaOpen sourcereads · Apache Software License 2.0
JuliaOpen sourcereads · Expat license
nomacsOpen sourcereads · GNU General Public License, version 3.0
Notational VelocityOpen sourcereads · GNU General Public License, version 3.0
ROpen sourcereads · GNU General Public License, version 2.0
TEAOpen sourcereads · GNU General Public License
DocInspectorreads and writes
Microsoft Wordreads and writes · end-user license agreement
MyOfficewrites · proprietary license
Q207902reads and writes · proprietary license
Q4041798reads and writes
WPS Writer 2013reads and writes
Advanced Guard for Information Securityreads
Distributed Password Recoveryreads
Duxbury Braille Translatorreads
DWG OfficeZipreads · proprietary license
Microsoft Excelreads · end-user license agreement
MobiOfficereads
Passcovery Suitereads · shareware
PDF Gurureads
Photorecoveryreads
Q11255reads · Microsoft end-user license agreement
Statareads
WebPlus Essentialsreads
WordPadreads · Microsoft end-user license agreement

Convert it

To	With	Fidelity	Command and losses
ePub Format	Pandoc	Partial	`pandoc -f docx -t epub in.docx -o out.epub` Document structure is kept; layout, styles and unsupported elements are lost.
Hypertext Markup Language	Pandoc	Partial	`pandoc -f docx -t html in.docx -o out.html` Document structure is kept; layout, styles and unsupported elements are lost.
Markdown	Pandoc	Partial	`pandoc -f docx -t markdown in.docx -o out.md` Document structure is kept; layout, styles and unsupported elements are lost.
OpenDocument	Pandoc	Partial	`pandoc -f docx -t odt in.docx -o out.odt` Document structure is kept; layout, styles and unsupported elements are lost.
OpenDocument	LibreOffice	Partial	`soffice --headless --convert-to odt in.docx` Layout may shift; macros and some features are not kept.
PDF	LibreOffice	Partial	`soffice --headless --convert-to pdf in.docx` Fixed layout: the document is no longer editable.
Plain Text File	Pandoc	Partial	`pandoc -f docx -t plain in.docx -o out.txt` Text only: all formatting is dropped.

Sources

PRONOM fmt/494

From PRONOM. Updated 2013-02-26.

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