Digital ID

Siemens issues digital certificates ("Certificates", also known as "Digital IDs") to employees as well as products and solutions within the Siemens environment (including Siemens Energy and Siemens Healthineers), to its known business partners, and to Siemens web sites in accordance with its "Siemens CPS Issuing CA“.

Certification Authority ("CA") contact information:

Siemens Corporate PKI

Siemens AG
CYS, Attn. Siemens Issuing CA(s)
81739 Munich
Federal Republic of Germany

Siemens Product PKI

Siemens AG
T RPD1, Attn. Siemens Product PKI
81739 Munich
Federal Republic of Germany


Certificate Problem Reports to be reached out to:

(For external use only – Siemens Employees can get support at


Certificate consumers can request test certificates of all the certificate types that the Siemens CA issues using the Certificate Problem Report email address above.



Certificate Policy / Certification Practice Statement (“CP/CPS”):

Siemens Corporate PKI

Siemens Product PKI


CA and repository, licenses, confidentiality and audit:
The Siemens PKI is classified as critical IT infrastructure of the company and was audited and certified in accordance with ETSI EN 319 411-1 v1.2.0


Limited warranty and disclaimer / Limitation of liability:
Included in Siemens Certificate Policy ("CP").

CA Certificates:
Siemens has made the Siemens' CA(s) Certificates available for downloading. Please find an overview of the structure and different CA Certificates in Siemens PKI CA Hierarchy (PDF).

Public Certificate Repository:

Siemens operates a publicly accessible Certificate Repository. In the Certificate Repository the Certificates of the Siemens PKI are stored. The Certificate Repository is available on the Internet to enable the exchange of secure e-mails with Siemens.
The Certificate Repository offers an Online Search for Siemens certificates. To retrieve Certificates directly from the Certificate Repository, it must be set up and configured as LDAP directory in the respective e-mail encryption program.

Access       Domain Name       IP-Address            Port    Search Base
Siemens    389    o=trustcenter

Authentication with Siemens PKI:

PGP certificates in the Certificate Repository:
The Certificate Repository also contains the Siemens PGP certificates. It can be used with all PGP clients supporting LDAP.

European Bridge CA:
Siemens is a member of the European Bridge CA.

The European Bridge CA operates a virtual Directory Service. Certificates of participants from different companies can be called up via this Directory Service.
To use the Bridge-CA Repository it must be set up and configured as an LDAP directory the respective e-mail encryption program:

Access    Domain Name        IP-Address         Port    Search Base
EBCA       389     o=ebca

Related Links: