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SignServer Hardware Appliance 5.2.0 Release Notes
DECEMBER 2025
We are pleased to announce the release of SignServer Hardware Appliance 5.2.0.
With this release, we have added support for SignServer 7.5 network-attached HSMs (Luna, nShield, Securosys, Proteccio, DPoD, Utimaco) and external databases (MariaDB, Oracle Database, PostgreSQL, Microsoft SQL Server), enabling better integration and scalability for demanding environments. In addition, the Hardware Appliance can now be configured for post-quantum cryptography (PQC) with u.trust and Luna, further modernizing the platform and preparing for future security requirements.
Highlights
New version of SignServer Enterprise
SignServer Enterprise has been updated to version 7.5. For more information, see the SignServer Release Notes.
Support for Network-Attached HSMs
Connect the NX Hardware Appliance to network-attached HSMs (Luna, nShield, Securosys, Proteccio, DPoD, Utimaco) to reuse existing HSM infrastructure and support more deployment scenarios. The HSM configuration page was redesigned to accommodate the new network-attached options with a clearer setup flow and improved feedback.
External Database Connectivity
Use external databases (MariaDB, Oracle Database, PostgreSQL, Microsoft SQL Server) with the NX Hardware Appliance to meet higher storage and scalability requirements.
PQC Support with u.trust and Luna
Enable PQC-capable configurations with u.trust and Luna HSMs to prepare the Hardware Appliance for upcoming post-quantum security needs.
Improvements and Corrections
The following lists other improvements and corrections included in the release.
Improved reliability of remote PIN pad connection tests, especially in firewall-protected environments.
Corrected display of Luna backup tokens.
Enhanced stability of HSM backup and restore procedures for Luna and u.trust HSMs to avoid invalid backups.
Ensured that the reported HSM firmware version is correctly updated after restoring key synchronization packages.
Upgrade Information
For information on the required steps to update the EJBCA Hardware Appliance, refer to
for u.trust HSM firmware update
for Luna HSM firmware update