.CDOC File Extension

2 file types use the .cdoc file extension.

Encrypted DigiDoc File

Developer RIA
3.6  |  9 Votes

What is a CDOC file?

A CDOC file is an encrypted digital document (DigiDoc) created with qDigiDoc, an open source software used to authenticate Estonian and Finnish government issued ID cards and signed documents. It contains a data file (an .XML, .DOC, .XLS, .PDF, .RTF, etc.) encrypted with the AES-128 encryption algorithm, an encrypted key to decrypt the data file, recipient certificate, and other metadata.

More Information

The CDOC file is save in the ENCDOC-XML format. It is developed by Riigi Infosüsteemi Amet (RIA), which is the Information System Authority of Estonia. CDOC is one of three digital signature and cryptographic files in the DigiDoc family, along with the .DDOC and .BDOC files.

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.

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Programs that open CDOC files


Clicker Document

Developer Crick Software
3.0  |  6 Votes

A CDOC file may also be a document created by Clicker, a literacy tool used by teachers to create curriculum resources tailored to student needs. It may contain text, images, and recorded voice notes.

More Information

The CDOC document is the primary file used by Clicker word processor. The program offers several writing features such as the ability to hear text spoken in realistic voices, receive word predictions based on what is typed, receive spelling suggestions that can be illustrated and spoken, and record initial thoughts and ideas before writing.

Programs that open CDOC files

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