No Changes to OpenSSH
Seamlessly integrates with existing infrastructure without requiring large-scale equipment replacement
Post-Quantum Secure SSH Certificate Centralized Management and Audit System
Ensure every SSH login is “authorized, revocable, auditable, and long-term trustworthy”
Zentra PQSSHCA is an enterprise-grade SSH Certificate Authority (SSH CA),
with centralized management, auditability, and revocability at its core, fully replacing the management and security risks caused by traditional static SSH keys (authorized_keys).
The system adopts the OpenSSH standard certificate mechanism and is designed on a post-quantum cryptography (PQC) extensible architecture, helping enterprises build a long-term evolving SSH identity governance platform in the era of Zero Trust and quantum transformation.
Static SSH keys remain valid for long periods and are difficult to revoke. After outsourcing or maintenance activities, permissions often remain in the system, creating major security gaps. During audits, it is impossible to clearly answer "who logged into which systems and when." Once IoT and industrial devices are deployed, they often lose controllability, exposing organizations to unknown risks.
Seamlessly integrates with existing infrastructure without requiring large-scale equipment replacement
Adopts a short-lived certificate mechanism to fundamentally reduce risks
Supports real-time permission revocation and tamper-resistant audit logs
Proactively deploys PQC technology to defend against future quantum computing threats
Typical Application Scenario 1
Build controllable, auditable, and accountable SSH management for critical infrastructure. The SSH risks faced by government agencies and critical infrastructure are not only cybersecurity issues, but also core issues of governance, responsibility attribution, and regulatory compliance.

Typical Application Scenario 2
Supports high-frequency operations and maintenance while meeting the strictest internal control and regulatory compliance requirements. Financial institutions rely heavily on SSH for system operations, deployment, and emergency handling, but they also face the strictest internal control frameworks, audit requirements, and regulatory responsibilities.

Typical Application Scenario 3
Completes the final piece of cybersecurity and regulatory compliance for equipment and production lines. Zentra PQSSHCA provides device-level SSH certificate management for industrial automation machines, Edge Gateways, and IoT devices, meeting EU CRA and IEC 62443 requirements.

7.2 or above
x86_64, 2 cores or above
4 GB or above (8 GB recommended)
Linux (Ubuntu 22.04 LTS / RHEL 8+ recommended)
HTTPS (Token-based Authentication)
6F., No. 578, Ruiguang Rd., Neihu Dist., Taipei City 114 , Taiwan (R.O.C.)
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