The File Extensions Database

.BDOC File Extension

  • Developer by: RIA
  • Category: Compressed Files
  • Format: Zip

What is an .BDOC file?

.BDOC is Binary DigiDoc Signature File

A BDOC file is a binary digital document (DigiDoc) created with qDigiDoc, an open source software used to authenticate Estonian and Finnish government issued ID cards and signed documents. It is a .ZIP compressed container that stores the files that have been signed by a government employee, the signatures related to each file, and the protocol control information.

The BDOC format is based on the ETSI ASiC signature container standards. It is developed by Riigi Infosüsteemi Amet (RIA), which is the Information System Authority of Estonia. BDOC is one of three digital signature and cryptographic file formats in the DigiDoc family, along with the .CDOC and .DDOC files.

Several versions of the BDOC format have been developed since its initial release. 1.0 was published in 2009 and was used until May 2014 when it was replaced by version 2.1. The BDOC format is the second generation of DigiDoc formats and succeeded the first generation DDOC format.

The BDOC file contains the following contents:

  • [document].doc
  • mimetype
  • META-INF/manifest.xml
  • META-INF/signatures1.xml

NOTE: The qDigiDoc software can be used to digitally sign documents using an employee's ID card or mobile ID and can open, save, and verify documents with digital signatures. The software is open source and can be downloaded for free through the links below.

Programs that open Binary DigiDoc Signature File

How to solve problems with BDOC files

  • Associate the BDOC file extension with the correct application. On :
    Windows: Right click on any BDOC file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.BDOC files". Mac: Right click (or Ctrl-click) the BDOC file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .BDOC is Binary DigiDoc Signature File. Because only the current version supports the latest BDOC file format. Search, therefore, e.g. on the RIA manufacturer website after an available .BDOC is Binary DigiDoc Signature File update.
  • To make sure that your BDOC file is not corrupted or virus-infected, get the file again and scan it with antivirus software.