Public Key Infrastructure (PKI) services form the backbone of secure communication in connected ecosystems like automotive and IoT. They provide the technologies, policies, and processes required to manage public key encryption and digital certificates—ensuring the authenticity, integrity, and confidentiality of data exchanged between vehicles, devices, and backend systems.
In industries, where safety and trust are paramount, PKI enables secure software updates, trusted device identities, and protection against cyber threats.
Our PKI services support a wide range of security-critical operations, including:
Our cybersecurity teams in Germany (diconium) and India deliver PKI services that meet the needs of high-assurance environments, from connected vehicles to medical and industrial systems.
With a proven infrastructure built on certified Hardware Security Modules (HSMs), robust token generation systems, and a user-centric UI, our PKI solutions are trusted by automotive industry leaders.
With our foundational PKI infrastructure now firmly in place, we are actively scaling to support additional PKI services such as software signing, boot image signing, and encrypted Over-the-Air (OTA) update packages, further advancing our client's cybersecurity capabilities and operational efficiency.
Senior Product Owner Embedded Security, diconium
The system is anchored by a physical HSM hosted in a secure data center in Germany.
This HSM is specifically used to sign the generated tokens, binding each token cryptographically to its source.
The service is designed following NIST CSF, ISO 27001 and TISAX information security standards.
These frameworks guide the management of information security, risk controls, and governance across the service lifecycle.
We maintain infrastructure integrity through:
These controls ensure a secure, tamper-resistant token service.
The backend infrastructure is physically and logically segregated from general IT systems.
Only authorized personnel have access to the PKI system, which significantly reduces the attack surface and risk of unauthorized interaction.
Access to the system is strictly protected using mutual TLS (mTLS) in combination with username/password authentication.
This dual-layer security ensures that only authorized users with valid certificates can access any PKI functions.
20,000+
Tokens
100+
Users
5+
Countries
Core PKI components — including the UI, backend API, and HSM server — operate within an mTLS-enforced environment. This allows only verified access to cryptographic operations.
User Interface (GUI)
HSM Server
Backend API
mTLS Authentication
CI/CD Integration
We offer a fully managed, end-to-end PKI solution tailored to your security, compliance, and integration requirements. This model is ideal for enterprises that want a hands-off approach with maximum assurance. ...
What’s Included:
Our HSM as a Service offering gives your team direct API access to a certified, FIPS-compliant HSM infrastructure — without the overhead of maintaining physical hardware.
Whether you're signing firmware, encrypting telemetry, or issuing certificates, our HSM as a Service forms the secure cryptographic foundation of your public key infrastructure. ...
Features:
We provide development support through our expert security engineering team for organizations building custom PKI stacks or integrating with existing infrastructure. ...
Key Features:
This model is perfect for enterprise teams looking to modernize their certificate management, automate trust workflows, or embed PKI into new products.
As part of our holistic security model, we provide penetration testing and validation services to ensure the resilience of your PKI environment. ...
Scope Includes:
reporting with prioritized findings and remediation planning. These services are available as part of your Public Key Infrastructure Services engagement or as a standalone security validation initiative.
Security doesn’t stop at deployment. Our Support & Maintenance offerings ensure long-term reliability and operational readiness. ...
Service Elements:
In this model, our team handles the entire PKI lifecycle — from architecture and infrastructure provisioning to certificate management and compliance.
You get a turnkey, compliant, and fully supported PKI solution, managed by our security team.
Your internal team builds your own PKI stack on top of diconium’s secure HSM services, APIs, and infrastructure.
We provide the cryptographic core; you own the application logic and user experience.
This model offers full flexibility while leveraging the trust foundation of our HSM as a Service backend.
| Feature | Build & Manage Custom Service | HSM as a Service | Development Support Service | Validation & PenTests Service | Support & Maintenance Service |
|---|---|---|---|---|---|
Infrastructure Provisioning |
✓ | ✓ | |||
Backend Development |
✓ | ✓ | |||
Custom GUI (if needed) |
✓ | ✓ | |||
User & Access Management |
✓ | ✓ | |||
API Access to HSM |
✓ | ||||
Crypto Services & HSM SupportM |
✓ | ✓ | |||
Backup & Monitoring |
✓ | ✓ | |||
Development Support |
✓ | ||||
PKI Validation (Service / APIs / Identity & Key Mgmt) |
✓ | ✓ | ✓ | ||
Ongoing Support & Maintenance |
✓ | ✓ | ✓ |
To streamline the management of secure ECU testing workflows, we developed PKI as a Service (PKIaas) platform for a leading automotive manufacturer.
The solution replaced manual token generation processes with a web-based system built on certified HSMs, mutual TLS (mTLS), and role-based access controls.
The platform enables the issuance of device-specific security tokens, used to enable or disable ECU features during testing.
PKIaaS (Public Key Infrastructure as a Service) provides all the benefits of a full-scale PKI without the overhead of managing infrastructure. It enables scalable PKI deployment, fast PKI certificate management, and seamless integration with enterprise PKI systems.
HSM as a Service offers secure cryptographic operations such as signing, encryption, and key management using certified HSMs. This service is essential for organizations that need FIPS-compliant HSM services integrated into their PKI architecture.
Yes, we provide signing services as a core part of our PKIaaS platform. This includes support for:
All signing operations are executed using certified HSMs to ensure integrity, traceability, and regulatory compliance.
Absolutely. We offer expert guidance on designing scalable, secure PKI architecture that aligns with your enterprise's compliance and operational goals. Whether you're starting fresh or modernizing legacy systems, our consulting helps streamline PKI deployment.
We offer ongoing support for PKI certificate management, HSM as a Service maintenance, and overall PKI services operation. Our team ensures long-term success through monitoring, patching, and expert troubleshooting.
Yes. We support encryption workflows for telemetry, OTA images, and other sensitive data. Encryption is integrated into our certificate management system and backed by our HSM infrastructure to ensure secure, policy-driven operations.
PKI Certificate Management is crucial to ensure the validity, lifecycle control, and security of digital certificates. Our services help automate and centralize certificate renewal, revocation, and monitoring processes across large enterprise PKI deployments.
HSM services provide hardware-based, tamper-resistant environments for cryptographic key operations. Unlike software-based storage, HSM services offer enhanced security, compliance readiness, and seamless integration with your PKI certificate lifecycle.
Yes, automation is central to our PKI services. We enable fast and secure PKI certificate issuance, reducing manual overhead and human error, and improving digital certificate management efficiency across your organization.
