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HSM as a Service

Cloud HSM with clear key control.

You need protected key operations but do not want to operate every infrastructure component yourself. We evaluate HSM services and cloud connections based on key control, access paths, locations and exit options, and integrate the suitable solution into your applications.

server room aisle with metal equipment racks — illustrative image
Responsibility and architecture model · Planning and implementation by OTOKO®

Your brief for OTOKO®

What we take care of for you.

A service can provide dedicated hardware, partitions or a managed key API. This results in different options for administration and key movement. We clarify who generates keys, who may trigger operations and who manages the infrastructure. Storage location alone does not answer these questions. Contract terms, technical export limits and the availability of the required mechanisms are reviewed before you commit.

The possible scope of services

  • Compare service models and lines of responsibility
  • Plan network access, tenants and administrator roles
  • Connect applications to the selected environment
  • Assess backup, region changes and exit
  • Agree on measurable operating and acceptance criteria

We define the specific scope, your involvement and the acceptance criteria before the start.

Technology explained clearly

How we carry out the task.

01

The application needs a resilient connection path

Private connectivity, name resolution, authentication and latency affect every cryptographic call. We test the path under the real load profile and plan for behavior when the connection is interrupted. A second endpoint only helps if suitable keys and permissions are available there. External key services or customer-managed keys also differ in which data and services they actually control. We document these boundaries so that business owners understand the provider’s remaining influence.

02

Clarifying the exit before you get started

An exit concept describes which keys can be exported, which data would need to be re-encrypted and which services would need to be replaced. This includes deadlines, deletion confirmations and dependencies on backups. In the project, we agree on achievable operating goals and review restart and revocation of rights. A blanket promise of full portability would not be credible without this review.

03

Telling AWS CloudHSM and Azure Managed HSM apart

AWS CloudHSM and Azure Key Vault Managed HSM represent different integration and operating models. AWS CloudHSM offers HSM client connections for suitable applications; Azure Managed HSM provides a managed key service with Azure integration. We review the API, key types, identities and recovery model for each workload. A switch is therefore not simply a matter of exchanging a server address. What matters is whether the specific application and the required scope of control fit the service.

04

BYOK is not automatically external key custody

Bring Your Own Key primarily describes bringing your own key material into a supported service. On its own, it does not answer who can trigger key operations or where plaintext data is processed. External key management adds further technical dependencies, for example an external service for certain release or unwrapping operations. We document these trust boundaries and also test targeted revocation of rights. Functions and limitations are reviewed for the specific cloud service.

05

Example: moving an application to the cloud

An existing application needs to move, but its key operations must stay controllable. OTOKO® first checks whether the existing interface can continue to be used or whether it needs to be adapted. In the pilot, we measure response times from the target network, review separate administrator roles and test recovery. The exit concept describes both exportable keys and cases in which new key generation and data conversion would be necessary. The result is an operating model with named responsibilities.

Meeting room at the OTOKO® Cologne office

A verifiable result

What you keep working with.

  1. Responsibility and architecture model
  2. Tested service connection
  3. Operations and exit concept

The handover brings together implementation and documentation. Together, we review the agreed cases and record any remaining tasks.

Before the first step

Your questions about HSM as a Service.

Is HSM as a service the same as a cloud key vault?

Not necessarily. Scope of functions, security boundary and administrator access differ by service and plan. We compare the specific offering rather than just the product name.

Can we switch to our own data center later?

This depends on export rules, formats and the connected applications. A possible switch is therefore already taken into account during selection and testing.

Does a cloud provider take over all operating tasks?

No. Even with managed hardware, tasks such as application permissions, key usage and organizational approvals remain with the customer or the operations partner they have engaged. The exact division depends on the service and is documented in the project.

Are Azure Managed HSM and AWS CloudHSM interchangeable?

Not as a general rule. Interfaces, identities, key types and administration procedures differ. We assess a migration based on the application in use and test it with a representative integration case.

Does BYOK prove that the cloud provider cannot decrypt data?

No. Bringing your own key material alone does not answer which services can trigger key operations and where data is processed. What matters is the architecture, the service functions and the actual distribution of permissions.

What is tested in the event of a connection failure?

Timeouts, retries, reconnection and the planned alternative endpoint are reviewed under realistic conditions. The application must also be able to handle a failed cryptographic call in a controlled way.

Your project

Which task would you like to solve?

Describe your situation and the desired result. The selected service will be included in the contact request.

Request this service

Our Partners

  • Microsoft
  • Microsoft Azure
  • Amazon AWS
  • Google Cloud
  • Thales Group
  • Arrow ECS
  • Vodafone
  • IBM
  • Veeam
  • Atlassian
  • JetBrains
  • NinjaOne
  • OPSWAT
  • Utimaco
  • Eviden

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