Difference between pages "Personal Folder File (PAB, PST, OST)" and "Excel Spreadsheet (XLSB)"

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[[Microsoft]] [[Outlook]] uses the '''Personal Folder File (PFF)''' to store e-mails, appointments, tasks, contacts, notes, etc.
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The '''Excel Spreadsheet (XLSB) file format''' has the '''.xlsb''' extension. This file type originates from [[Microsoft Excel]]. However, other spreadsheet software can be used to display these files as well. These include:
 
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* [[OpenOffice]] (probably as of version 3)
Three different types of the PFF are known:
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* The '''Personal Address Book (PAB)''', which contains the address book of contacts. These files have the extension '''.pab'''.
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* The '''Personal Storage Table (PST)''', which contains items like e-mails, appointments, tasks, notes, etc. and is used as current and archived mailbox files. These files have the extension '''.pst'''. The PST format is also referred to as the '''Personal Folder File (PFF)''' format.
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* The '''Offline Storage Table (OST)''', which contains items like e-mails, appointments, tasks, notes, etc. and is used as off line mailbox files in conjunction with [[Microsoft]] [[Exchange]]. These files have the extension '''.ost'''. The OST format is also referred to as the '''Offline Folder File (OFF)''' format.
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The underlying file format of these files is the same of which the actual name is unknown but has been dubbed the '''Personal Folder File (PFF)''' format, because of its most common usage.
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== MIME types ==
 
== MIME types ==
 
The actual mime type of the PFF format is unspecified however some sources claim the following [[MIME types]] apply to this [[file format]]:
 
* application/vnd.ms-outlook (for PST files)
 
  
 
== File signature ==
 
== File signature ==
  
PFF has the following file signature:
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[[Microsoft Excel]] spreadsheets of version 2007 are stored in a [[ZIP archive]] file. These files therefore have the ZIP file signature
 
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hexadecimal: 21 42 44 4e
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ASCII: !BDN
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== File types ==
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There are a 32-bit and a 64-bit version of the PFF. These have the same file signature but can be identified by the version in the file header.
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== Contents ==
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The PFF basically contains a hierarchy of items. The attributes of these items are defined by the [[Microsoft]] [[Outlook]] [[Message API (MAPI)]].
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== Encryption ==
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== See Also==
  
The PFF format allows the file to be encrypted. Two types of encryptions are currently known these are referred to as compressible and high encryption.
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[[Excel Spreadsheet (XLS)]]
The compressible encryption is a basic substitution cypher and the high encryption is a little more complex substitution cypher.
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From a cryptographic point of view this is more a way of obfuscation than a means to protect confidentiality.
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== See also==
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[[Excel Spreadsheet (XLSX)]]
  
* A great deal of information about the format has been documented by the [http://libpff.sourceforge.net libpff project], including some of the [http://downloads.sourceforge.net/libpff/Personal_Folder_File_format.pdf Personal Folder File format specifications] and [http://downloads.sourceforge.net/libpff/MAPI_definitions.pdf MAPI definitions].
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[http://download.microsoft.com/download/0/B/E/0BE8BDD7-E5E8-422A-ABFD-4342ED7AD886/Excel2007BinaryFileFormat(xlsb)Specification.pdf Excel 2007 Binary File format by Microsoft]
* [http://www.five-ten-sg.com/libpst/ libpst]
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[[Category:File Formats]]
 
[[Category:File Formats]]

Latest revision as of 04:53, 31 January 2009

The Excel Spreadsheet (XLSB) file format has the .xlsb extension. This file type originates from Microsoft Excel. However, other spreadsheet software can be used to display these files as well. These include:

MIME types

File signature

Microsoft Excel spreadsheets of version 2007 are stored in a ZIP archive file. These files therefore have the ZIP file signature

See Also

Excel Spreadsheet (XLS)

Excel Spreadsheet (XLSX)

Excel 2007 Binary File format by Microsoft