Eurex Clearing
With this Newsflash, Eurex Clearing announces a change in the Public Key Infrastructure (PKI) and the Certificate Authority (CA) used to sign the client certificates for the Buy-in Auction platform (B7 GUI).
Deutsche Börse introduced a new Public Key Infrastructure (PKI) with a new Certificate Authority (CA) on 24 August 2026.
Starting 24 August 2026, the process provided in the Member Section of Deutsche Börse Group for generating client certificates for selected interfaces will automatically use the new DBAG PKI infrastructure.
The following interfaces are affected
Participants using one of the affected interfaces must prepare for the PKI transition and renew their client certificates over the next few months.
Client certificates signed by the existing PKI/CA remain valid and may be used in parallel with certificates issued by the new PKI/CA until 18 December 2026. Usage of client certificates signed by the old PKI/CA beyond 18 December 2026 cannot be guaranteed.
All certificates issued under the previous PKI/CA must be renewed via the Member Section of Deutsche Börse Group no later than this date.
To support participants during the transition, a new column named “Certificate Type” has been added to the list of certificates displayed for each account in the DBAG Member Section.
Each client certificate in the DBAG Member Section can now easily be identified. Certificates signed by the existing DBAG PKI/CA are marked as “Old”, while client certificates signed by the new DBAG PKI/CA are marked as “New”.
Participants must complete the following steps for each affected interface:
For questions or further support, please contact Customer Technical Support and customers can reach their TKAM via your VIP number, or per email: cts@deutsche-boerse.com.
Kind regards,
Your Client Services Team

Further information
Recipients: | All Clearing Members, ISA Direct Clearing Members, Disclosed Direct Clients of Eurex Clearing AG and vendors | |
Target groups: | Front Office/Trading, Middle + Backoffice, IT/System Administration, Auditing/Security Coordination | |
Contact: | Technical Key Account Manager via your individual VIP number or cts@deutsche-boerse.com | |
Web: | www.eurex.com/ec-en/ |