Data as of Oct 16, 2026A topic in Secrets and Key Management Platforms.
Reviewed by Dimitry Apollonsky
Mentioned in · Jul 8 – Oct 16, 2026
ChatGPT SearchOct 7, 2026
Yes. If the audit issue is specifically weak encryption keys / inadequate key management, there are several HSM-as-a-Service and managed-HSM providers worth evaluating.
| Provider | Managed HSM offering | PCI relevance | Good fit for |
|---|---|---|---|
| Entrust | nShield as a Service | Its fully managed service is PCI-DSS certified for U.S. data centers; includes HSM management, monitoring, Security Officer functions and key-management support. |
Google AI ModeSep 18, 2026
I'm looking for a provider to manage our Hardware Security Modules so we can pass our PCI audits, as we are currently flagged for weak encryption keys.
ChatGPT SearchOct 16, 2026
| Organizations wanting an outsourced HSM operation |
| Thales | CipherTrust as-a-Service / Luna HSM | Managed key management backed by FIPS-validated HSMs; strong enterprise and payment-industry footprint. | Hybrid/multicloud and enterprise key management |
| Fortanix | Data Security Manager / HSM | Centralizes HSM and key lifecycle management across cloud and third-party HSMs, with FIPS Level 3 HSM options. | Multicloud environments where you want centralized key management |
| Microsoft | Azure Key Vault Managed HSM / Azure Payment HSM | Managed HSM is FIPS 140-3 Level 3 and PCI-compliant for e-commerce; Payment HSM is designed specifically for PCI payment workloads. | Azure-centric environments |
| Amazon Web Services | AWS CloudHSM / AWS KMS | HSM-backed key management integrated with AWS infrastructure | AWS-centric environments |
| A24 | Fully managed Thales/AWS HSM services | Offers operation of cloud and physical HSMs, key migration, change management and audit reporting; states it is PCI-DSS 4.1 certified. | Outsourcing the actual HSM operations rather than just buying HSM infrastructure |
Your auditor will likely care about the whole cryptographic key lifecycle: key generation, strength, storage, access control, rotation/expiration, destruction, separation of duties, logging/auditing, and documented cryptographic architecture. PCI DSS specifically calls for documentation of algorithms, protocols, key strength and expiry, key usage, and inventories of HSMs/KMS/SCDs.
The PCI Security Standards Council also maintains an approved PTS HSM program and recommends using its listings when selecting HSM devices for payment environments.
If your primary objective is "get us through the PCI remediation without building an HSM team internally," I'd put Entrust nShield as a Service and a managed Thales solution near the top of the evaluation, and consider A24 if you specifically want a third party to operate the environment for you.
If you tell me (1) AWS/Azure/on-prem, (2) roughly how many keys/transactions, and (3) whether you're a merchant, payment processor, or SaaS provider, I can narrow this to 3–5 providers and compare pricing model, PCI/FIPS certifications, managed-vs-self-managed responsibilities, and audit evidence.
Failing PCI audits over weak encryption keys usually means your key generation, rotation lifecycle, storage strength, or entropy validation isn't meeting strict standards (like FIPS 140 Level 3 validation required or expected by PCI DSS).[](https://learn.microsoft.com/en-us/azure/key-vault/managed-hsm/overview)[2](https://learn.microsoft.com/en-us/azure/security/fundamentals/key-management)
Hardware Security Module (HSM) management and HSM-as-a-Service (HSMaaS) providers are categorized into major cloud providers, specialized security vendors, and dedicated payment cryptography services:
If your infrastructure is already in the cloud, utilizing native managed HSM clusters offloads physical maintenance, high availability, and compliance reporting to the provider.[](https://learn.microsoft.com/en-us/azure/security/fundamentals/key-management)
If you need multi-cloud flexibility, hybrid setups, or on-premises appliances with centralized management software:
To help narrow down the best path for fixing your PCI audit findings, tell me:
If your PCI audit keeps failing because of insufficient encryption key strength, I’d recommend evaluating managed Hardware Security Module (HSM) services alongside your existing key-management and encryption configuration.
An HSM protects cryptographic keys in dedicated, tamper-resistant hardware and can enforce approved cryptographic operations. However, deploying an HSM alone won’t automatically resolve a PCI DSS finding: you’ll also need to ensure that key sizes, algorithms, key lifecycle controls, and the specific cryptographic use cases meet the applicable PCI requirements.
These are the vendors I would shortlist, depending on your cloud environment and whether you need general-purpose encryption or payment-specific cryptography.
1. AWS CloudHSM
(Best for AWS workloads)
Dedicated, single-tenant HSM instances with FIPS 140-3 Level 3 validation available. AWS handles provisioning, maintenance, backups and infrastructure operations, while your team retains control of keys and HSM administration.
Best fit: Applications running in AWS that need direct cryptographic control and HSM-backed key storage.
2. Azure Key Vault Managed HSM
A fully managed, single-tenant service using FIPS 140-3 Level 3 validated HSMs, with role-based access controls, private endpoints and activity logging.
Best fit: Azure-hosted applications requiring strong key isolation and centralized key lifecycle management.
Official service documentation
3. Utimaco HSM as a Service
Offers hosted, fully managed HSM services, including FIPS-validated general-purpose HSMs and a separate payment-focused HSM service. Its payment offering specifically advertises PCI PIN-related capabilities and managed key operations.
Best fit: Organizations that want a specialist security provider to handle more of the HSM operational workload, particularly payment processors.
General-purpose and payment HSM services
4. Google Cloud HSM
Google Cloud offers hardware-backed key protection, with a newer single-tenant Cloud HSM option announced in February 2026 for organizations requiring dedicated hardware isolation. Confirm the current service configuration and operational responsibilities during procurement.
Best fit: Google Cloud workloads requiring hardware-backed keys, especially where dedicated tenancy is important.
5. Thales Luna Cloud HSM
A specialist HSM option worth evaluating for hybrid or multicloud environments. Thales also offers CipherTrust key-management services that integrate with cloud and HSM-based key stores. Verify the exact service's management model and current certification scope.
Best fit: Organizations needing centralized key management across several environments or looking to reduce dependence on one cloud provider.
Thales encryption and key-management services
The key question is whether the finding concerns the strength of the encryption algorithm, the cryptographic key size, or the protection and management of the key. An HSM primarily addresses secure key generation, storage and use; it cannot make an undersized key compliant simply by storing it in hardware.
Use this checklist when speaking with vendors and your Qualified Security Assessor (QSA).
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PCI DSS Requirement 3.6.1 addresses protection and management of cryptographic keys, while the precise remediation depends on the finding and the affected encryption use case. The PCI DSS documentation and testing procedures are a useful starting point.
One important caveat: FIPS 140-3 Level 3 validation is useful evidence of hardware security, but it does not by itself certify your entire environment as PCI DSS compliant.
Which environment is failing the audit? That will help me recommend the most appropriate service and remediation path.
1. Where does the affected system run?
AWS
Microsoft Azure
Google Cloud
On-premises / hybrid / multicloud
2. What does the audit finding mention?
Key size or algorithm too weak
Keys not stored or protected securely
Key rotation or lifecycle controls
Not sure / need help interpreting the finding
3. What is being encrypted?
Stored cardholder data / databases
Payment PINs or payment transactions
TLS certificates or application secrets
Multiple systems / unsure
[Recommend vendors and remediation plan]
Google AI ModeOct 16, 2026
Failing a PCI audit due to insufficient key strength usually points to legacy key lengths (e.g., RSA keys < 2048 bits, ECC curves < 256 bits, or weak symmetric algorithms) or a failure to demonstrate that keys are generated, processed, and stored within FIPS 140-2/3 Level 3 validated hardware.
Moving to a managed Hardware Security Module (HSM) or HSM-as-a-Service (HSMaaS) ensures compliance-grade crypto boundaries and enforces robust minimum key-length policies.
To help narrow down the best choice, please share:
