Root certificates

Microsoft Windows

Download of all A-Trust root certificates for Microsoft applications

Download of all A-Trust intermediate certificates for Microsoft applications

Afterwards right-click on the saved file and select "Install certificates". Follow the instructions until you have reached the end of the installation. A dialog with the fingerprint and the name of the certificate will then appear for each self-signed root certificate that has not yet been installed (see image).

Then right-click on the file A-Trust-Stamm.p7b and select "Install certificates". In the following wizard, please select "Save all certificates in the following memory" on the 2nd page and "Browse..." (see image). In the window that appears, please select "Trusted root certification authorities" and confirm with "OK". Now follow the instructions until you have reached the end of the installation. A dialog with the fingerprint and the name of the certificate will then appear for each self-signed root certificate that has not yet been installed (see image below).

Zertifikatimport-Assistent Zertifikatspeicher auswählen

To import the intermediate instance certificates, right-click on the A-Trust intermediate.p7b file and then select "Install certificates". Follow the instructions until you have reached the end of the installation.

The following A-Trust root certificates should be installed to ensure the use of your A-Trust product:

Root certificatesFingerprintSerial number (HEX/DEC)
A-Trust-Qual-01e619d25b 380b7b13 fda33e8a 58cd82d8 a88e0515
d4d1370f d1d9eaa4 6412008f f3e59e11 4bcf724a
ee34d36b dd37e1d5 70719989 f88640d0 904671a6
00E243 / 57923
01c854 / 116820
144ddd / 1330653
A-Trust-nQual-0151a44c28 f313e3f9 cb5e7c0a 1e0e0dd2 843758ae
04cf0318 ba0b54dd 76e1de14 3445210b dd32e299
1baab153 920dd205 18d1395e 825ba3f6 1cc2c458
00E242 / 57922
01c85e / 116830
144dc3 / 1330627
A-Trust-Qual-02679a4f81 fc705dde c419778d d2ebd875 f4c242c6
82096e6d 9b124832 1625323d 52858642 cb0b748e
cd787a3d 5cba8207 08284836 5e9acde9 683364d8
00E248 / 57928
01c857 / 116823
144de4 / 1330660
A-Trust-nQual-03d3c063f2 19ed073e 34ad5d75 0b327629 ffd59af2
4caee38931 d19ae73b31 aa75ca33 d621290fa75e
016C1E / 93214
14b4f9 / 1357049
A-Trust-Qual-0342efdde6 bff35ed0 bae6acdd 204c50ae 86c4f4fa
51c01567 bcb22968 ef5a297b 7ea84e19 5594e0e8
60bbdd4c 61973fa5 c1bbf30e fdb08c6b 47f06b97
03E694 / 255636
041D14 / 269588
144df5 / 1330677
A-Trust-Root-05bf454bbf b0990af6 aff6ebc0 9651e219 ea699a330FCDB4/ 1035700
A-Trust-Root-071b1815af 925d140e fc5af9a1 aa55eebb 4ffbc56153F4EA89 / 1408559753
A-Trust-Root-09d05849de 4004da6e 867dee000 671cda8 f423266f769DB9D5 / 1990048213

When installing, always observe the security information and compare the data displayed with the data listed here to ensure that you are installing the original A-Trust certificates!

Windows Warnhinweis zum Zertifikat

As the A-Trust root certificates are signed by the RTR, you can also download this certificate from our homepage for your convenience.

The certificates listed here are available for download in .crt format (DER encoded), as required by Internet Explorer, for example.

In order for the certificate chain to be resolved in browsers such as NetscapeNavigator, Mozilla or other (server) applications, additional intermediate certificates must be installed.

Here you can find the intermediate certificates for SSL in Firefox

Root certificates SSLFingerprintSerial number (HEX/DEC)
a-sign-SSL-053ebb0b44 08d2791b 7d7421a2 9fa87816 f46b649f1EFEE313 / 520020755
a-sign-SSL-EV-057cc34ad2 4922f41f a0d35653 545e5eb5 8d05d2d87791CB12 / 2006043410
a-sign-SSL-076294ffc 58eecb61 26e6791 d683741a9 ded39fe2e7CB059F2 / 2091932146
a-sign-SSL-EV-07fd0ba28a 2e4238cb 3d22a4bee 68d27ea 2fa9cb6c74CB614FD74C300410EA8977BF40F20A /
155246457492720586326824095948172489226
a-sign-SSL-EV-07a1916ee0bc 146ecfed d833161c 513fa6e 81e4ca6a68CC8EF0 / 1758236400
a-sign-SSL-0971ffc753 e2be721 a19992bd38 a1de0a37 b9045403E062933 / 1040591155
a-sign-SSL-EV-0976587d76 cbfab515 aecb5c8144 b3a16cf 4449f581FA6A590 / 531015056

Here you will find the intermediate certificates in .crt format:

Install intermediate certificates

Here you will find all certificates in .pem format:

All certificates

Here you will find the root certificates in .pem format:

Only root

Here you will find the intermediate certificates in .pem format:

Intermediate only

Root certificates Test productsFingerprintSerial number (HEX/DEC)
a-sign-TEST-Qual-01a8 c9 30 00 65 3f af 7d 00 25 d3 d8 ee e6 bb dc 64 d9 8f 2516120F / 1446415
a-sign-TEST-nQual-016d d6 20 45 39 e9 34 bc 30 28 02 d0 e8 ea 40 bb 1b 70 07 e51725FA / 1517050
A-Trust-Test-Root-05dc 57 47 ac af a8 99 d5 c8 8f 40 a2 d3 4c b1 f4 fc 2f c0 96165FA5 / 1466277

Hardly in use, however for the sake of completeness: