Digital ID

Siemens Mobility issues digital certificates ("Certificates", also known as "Digital IDs") to its employees and agents, to its known business partners and to Siemens Mobility web sites in accordance with its "Siemens Mobility Issuing CA“.

Certification Authority ("CA") contact information
Siemens Mobility AG
CT CYS, Attn. Siemens Issuing CA(s)
81739 Munich
Federal Republic of Germany

E-mail: contact.pki[AT]siemens[DOT]com;
Certificate Problem Reports to be reached out to: certificate-problem-report[AT]siemens[DOT]com

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





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

CA and repository, licenses, confidentiality and audit
The Siemens Mobility 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 Mobility Certificate Policy ("CP").

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

Public Certificate Repository
Siemens Mobility operates a publicly accessible Certificate Repository. In the Certificate Repository the Certificates of the Siemens Mobility PKI are stored. The Certificate Repository is available on the Internet to enable the exchange of secure e-mails with Siemens Mobility.
The Certificate Repository offers an Online Search for Siemens Mobility 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 Mobility    389    o=trustcenter

Authentication with Siemens Mobility PKI

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

European Bridge CA
Siemens Mobility 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

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