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Public authority employees apply for their official signature and seal cards simply, conveniently and quickly on site from their own offices.

Do you have questions about our D-Trust signature and seal cards? Then we will be pleased to assist you. Our FAQs may already have the answer to your question. 

We will be pleased to assist you with any questions you may have about our Signed Data Service ASP solution. Our FAQs section may already have the answer to your question. If not, please feel free to contact us by phone.

LDAP stands for Lightweight Directory Access Protocol. It is basically the public telephone directory for digital certificates. Here you can request the status of certificates in the D-Trust repository service.

Do you want to know the status of a D-Trust certificate? Then please complete the form provided below and send it to us. To request the status of the certificate you will need its serial number in decimal or hexadecimal form and the name of the issuing Certification Authority (CA).

Efficient encryption of our data is one of the cornerstones of modern IT security. Cryptographic methods, however, are not an invention of modern times. People were already encrypting secret messages thousands of years ago. A look at the history of cryptography.

Seal ID ensures the origin and integrity of data.

For the 10th time, Bundesdruckerei has published a sustainability report according to the requirements of the German Sustainability Code (DNK). The 2021 issue is now online. 

Citizens will soon be able to prove their digital identity with a single click on their smartphone anywhere in the European Union. What exactly does the EU Commission have in mind with EUid, what role will electronic wallets play and what are the new stipulations in the eIDAS Regulation.

An SSL/TLS certificate assures the user that a real and trusted person or institution is behind an Internet presence.