The ID software is supported on the most widely used operating systems: Windows, macOS, Linux, iOS, Android.
The software is updated regularly at least twice per year. Updates are made because of the constant development of environments (operation systems, web browsers, and other support programmes).
Several Estonian IT companies develop the ID software on behalf of RIA – for example, RaulWalter OÜ and Nortal AS are doing it currently.
Specifications
Signing and encryption on your computer – the DigiDoc4
DigiDoc4 is an application that enables users to sign documents digitally on a computer using an ID card, Mobile-ID or Smart-ID, free of charge for standard personal use. Standard personal use is based on the principle of reasonable use and is intended to meet the everyday needs of individual users. Further information is available on the id.ee website.
The application can also be used to verify the validity of digital signatures, open and save documents contained in signed envelopes, encrypt documents to protect their confidentiality, and decrypt them so that they can be accessed again. In addition, DigiDoc4 allows users to view the information and validity of ID card certificates, change ID card PIN and PUK codes, and so on.
DigiDoc4 supports all major digitally signed document container formats, including envelopes with the .asice, .bdoc and .ddoc file extensions.
Signing and encryption on your phone – RIA DigiDoc
RIA DigiDoc is a mobile application that enables users to sign documents digitally on a smartphone using an ID card, Mobile-ID or Smart-ID, free of charge for standard personal use. Standard personal use is based on the principle of reasonable use and is intended to meet the everyday needs of individual users. Further information is available on the id.ee website.
The application can also be used to verify the validity of digital signatures, open and save documents contained in signed envelopes, encrypt documents to protect their confidentiality, and decrypt them so that they can be accessed again. In addition, RIA DigiDoc allows users to view the information and validity of ID card certificates, change ID card PIN and PUK codes, and so on.
RIA DigiDoc supports all major digitally signed document container formats, including envelopes with the .asice, .bdoc and .ddoc file extensions.
The RIA DigiDoc mobile app can be used on Android and iOS smart devices.
The Web eID solution enables the use of Estonian digital documents (ID-card, e-Resident’s digital ID, residence permit card, etc.) for secure authentication and signing on the web. Web eID is compatible with most common operating systems and web browsers, using the PC/SC application interface to communicate directly with ID-cards.
In addition to Estonian digital identity documents, Web eID also supports a number of European eID smart cards, including the national ID cards of Latvia, Lithuania and Finland. It has also been designed with the technical capability to enable the rapid integration of widely used European eID smart cards for online authentication.
Supported browsers: Google Chrome, Mozilla Firefox, Microsoft Edge (Chromium), and Safari.
The Web eID solution consists of a JavaScript library, a web browser extension, and an application which jointly coordinate the communication between the web browser, the website, and the smart card to perform cryptographic operations.
End users can install the Web eID components on their computers as part of the DigiDoc4 software installation package, which is available from the id.ee website.
Related links
Last updated: 20.07.2026
