What is a .DDOC file?
A .DDOC file is a type of digital document known as a DigiDoc Signature File. It is created using a program called qDigiDoc, which is a free, open-source software. This software is specially designed to work with the ID cards issued by the governments of Estonia and Finland. These ID cards can be used to digitally sign documents, ensuring their authenticity and integrity.
The .DDOC file contains one or more files that have been digitally signed by a government official. Along with these files, it includes the digital signatures themselves. Each signature comes with a certificate that proves the signer's identity, a confirmation that the signature was valid at the time of signing, and a certificate from the service that confirms the signature's validity.
To open a .DDOC file, you can use the qDigiDoc software. This software is not only for opening but also for saving and verifying documents that have digital signatures. Since it's open-source, anyone can download and use it for free.
The format of .DDOC files is based on a standard known as XML Advanced Electronic Signatures (XAdES), specifically the ETSI TS 101 903 standard. This format was developed by the Information System Authority of Estonia, also known as Riigi Infosüsteemi Amet (RIA). The .DDOC format is part of a family of digital signature and cryptographic file formats, which also includes .CDOC and .BDOC files.
Over time, different versions of the .DDOC format have been released, including versions 1.1, 1.2, and 1.3. These updates ensure that the .DDOC format remains compatible with other digital signature systems and international standards. Originally, .DDOC was the first generation of the DigiDoc format, but it has since been succeeded by the BDOC format.
In summary, if you have a .DDOC file, you can view and manage it using the qDigiDoc software. This file will contain digitally signed documents, which are important for verifying the authenticity and integrity of the documents, especially in contexts where they are used for official purposes in Estonia and Finland.
Verification
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