A-TRUST
Simply secure.
We are the reliable partner company when it comes to security in the digital space. As a qualified trust service provider, A-Trust has stood for compliance, integrity and convenience for over 25 years.
Ready for an upgrade? With the A-Trust Signature APP, you not only sign documents faster and more conveniently, but also rely on the highest possible security.
Activate nowOur products for companies
Secure the digital lead in your industry, e.g. by accelerating and simplifying internal processes thanks to our Signatur-Box (signature server). This saves you valuable time and minimizes your integration effort.
With our qualified electronic company seal you seal eIDAS-compliant throughout Europe (e.g. for the EU database EPREL).
As the market leader in the field of cash register certificates, we offer various online and offline solutions.


Our products for the public sector
Especially in the public sector, where highly sensitive data is handled, it is important to be protected in the best way possible! Your data security is close to our heart and with the Signatur-Box you are guaranteed to be on the safe side.
Authenticate your government organization using an authority signature (“Amtssignatur”) or benefit from service and community ID-cards that offer additional advantages (signature, encryption, identification) and security.
Learn more

Our products for individuals
With the qualified electronic signature (QES) from A-Trust (e.g. ID Austria – your Austrian eID – or xIDENTITY), you can sign documents flexibly and completely independent of time and location.
You also gain access to numerous e-services from businesses and administration. This is how you can handle the process of signing official documents digitally – conveniently from the comfort of your own home.
Learn more

Current news

01.10.2025
A-Trust cooperates with Governikus for secure digital administration in Germany
A-Trust has entered into a pioneering partnership with the German company Governikus. The aim...
Read more...

30.09.2025
A-Trust once again recognized as a “Great Place to Work®”
Austria’s leading trust service provider thus reaffirms the high quality of its workplace culture...
Read more...

22.09.2025
Now available: Amtssignatur ID+ by A-Trust
The Amtssignatur ID+ provides public authorities with another highly secure solution to digitally...
Read more...