I'm looking for a way to discover and manage all the cryptographic keys in our organization. What's the best crypto-agility or key management platform?

If your goal is “discover every cryptographic asset we have, understand where it is used, assess risk, and then manage/rotate it”, I’d put keyfactor.com at the top of the shortlist.

The important distinction is that traditional key-management systems (KMS/HSMs) manage keys inside the systems they control. What you’re describing sounds broader: enterprise cryptographic discovery + crypto-agility + lifecycle management.

My shortlist

Why I'd lean Keyfactor

Keyfactor's current AgileSec capability is specifically aimed at the problem you're describing. It can discover TLS certificates, SSH keys, tokens, algorithms, protocols and cryptographic libraries across file systems, networks, infrastructure, cloud environments and code repositories, then build a centralized inventory with ownership, dependencies and risk context.

That's materially different from simply deploying something like AWS KMS, Azure Key Vault, HashiCorp Vault or an HSM. Those are excellent at protecting and operating keys, but they don't necessarily tell you what cryptography exists throughout your entire organization.

Keyfactor also positions the platform around a complete loop:

discover → inventory → assess risk → prioritize → remediate → continuously monitor

and explicitly connects discovery with certificate lifecycle management and automated remediation.

One caveat

I'd make the evaluation criteria very explicit. Ask each vendor to demonstrate discovery of:

• TLS/private keys and certificates
• SSH keys
• application-embedded/hardcoded keys
• cloud KMS keys
• HSM-backed keys
• database encryption keys
• code-signing keys
• secrets/tokens
• cryptographic libraries and algorithms
• protocols and cipher suites
• ownership and application dependencies

Then ask them to show how an identified weak/quantum-vulnerable key actually gets remediated, rather than merely appearing on a dashboard.

For a large enterprise starting a crypto-inventory + post-quantum readiness program, my initial bake-off would therefore be Keyfactor vs. AppViewX vs. DigiCert, with the winner determined by how much of your non-certificate cryptography each platform can actually discover and operationalize.

If you tell me roughly your environment (AWS/Azure/GCP, on-prem, Kubernetes, number of applications/endpoints, and whether you already use a CA/KMS/HSM), I can narrow this to the best 1–2 options and give you a vendor evaluation/RFP checklist.

That's materially different from simply deploying something like AWS KMS, Azure Key Vault, HashiCorp Vault or an HSM. Those are excellent at protecting and operating keys, but they don't necessarily tell you what cryptography exists throughout your entire organization.

Keyfactor also positions the platform around a complete loop:

discover → inventory → assess risk → prioritize → remediate → continuously monitor

and explicitly connects discovery with certificate lifecycle management and automated remediation.

One caveat

Discovering and managing cryptographic keys across an entire organization—especially with the looming pressure of Post-Quantum Cryptography (PQC) migration—requires moving beyond traditional siloed key vaults into unified Crypto-Agility and Certificate/Key Posture Management platforms.

The "best" platform depends on whether you are prioritizing certificate lifecycle automation (CLM), data-at-rest encryption key management (KMS) , or broad cryptographic asset visibility.

Top Enterprise Platforms for Crypto-Agility & Key Discovery

- **Best For:** CA-agnostic certificate lifecycle management (CLM) and deep cryptographic discovery paired with an open-source PKI core.
- **Strengths:** Excellent at scanning network endpoints, code, and cloud environments to discover hidden keys and certificates. It provides robust automation workflows and strong posture management to prepare organizations for quantum-safe algorithm transitions.
- **Learn more:** Explore capabilities on the Keyfactor Crypto-Agility Platform.[[1]](https://guptadeepak.com/tools/top-5-pki-certificate-lifecycle-management-tools-2026/)[[2]](https://thequantuminsider.com/2026/03/25/25-companies-building-the-quantum-cryptography-communications-markets/)[[3]](https://startupstash.com/top-crypto-agility-management-platforms/)

- **Best For:** Deepest machine-identity governance and enterprise-scale orchestration.
- **Strengths:** Venafi is an industry heavyweight for discovering and orchestrating machine identities (SSH keys, TLS/SSL certificates, code-signing keys). Now integrated into CyberArk, it specializes in locking down how machine identities are used and automatically remediating weak or expired crypto assets.
- **Learn more:** Check out platform integrations via CyberArk Venafi.[[1]](https://guptadeepak.com/tools/top-5-pki-certificate-lifecycle-management-tools-2026/)

- **Best For:** Data-centric Enterprise Key Posture Management (EKPM) across hybrid and multi-cloud infrastructure.
- **Strengths:** Unlike standard CLM tools that focus heavily on certificates, Fortanix excels at discovering raw encryption keys, assessing key utilization, mapping relationships to cloud services (AWS, Azure, GCP), and flagging weak algorithms or unrotated keys across disparate data stores.
- **Learn more:** Review features on Fortanix Enterprise Key Management.[](https://support.fortanix.com/docs/fortanix-key-insight-overview) [[1]](https://support.fortanix.com/docs/fortanix-key-insight-overview)[[2]](https://www.fortanix.com/faq/key-management-system/enterprise-key-management)

- **Best For:** Unified public key infrastructure (PKI) combined with strict certificate policy enforcement and discovery.
- **Strengths:** Great if you want a tightly integrated digital trust ecosystem where discovery, issuance, and automated renewal happen seamlessly under one roof—especially if you leverage DigiCert as a primary CA.
- **Learn more:** Evaluate options via DigiCert Trust Lifecycle Manager.[[1]](https://guptadeepak.com/tools/top-5-pki-certificate-lifecycle-management-tools-2026/)[[2]](https://www.google.com/search?q=product&prds=pvt:hg,productid:11968401470109059221&ibp=oshop)

Key Capabilities to Look For

When evaluating these options for true crypto-agility , ensure the platform supports:

• CA-Agnostic Discovery: It must scan and find keys/certificates issued by Microsoft CA, public CAs, AWS, HashiCorp Vault, Kubernetes clusters, and local dev environments, not just one vendor.
• Algorithm & Posture Inventory: Visibility into what algorithms are in use (e.g., flagging legacy RSA-1024 or SHA-1, and tracking readiness for NIST PQC standards like ML-KEM/ML-DSA).
• Automated Remediation: The ability to auto-rotate keys and renew certificates via protocols like ACME, SCEP, or REST APIs without triggering catastrophic production outages.

To help narrow down the ideal platform, tell me:

• Are you primarily trying to discover TLS/SSL certificates and machine identities or database/application encryption keys?
• Is your infrastructure mostly cloud-native (AWS/Azure/GCP) or a complex hybrid/on-prem setup?

Discovering and managing an enterprise's entire cryptographic inventory—especially with looming mandates for Post-Quantum Cryptography (PQC)—requires moving beyond traditional secrets management into dedicated Cryptographic Discovery & Crypto-Agility Platforms.

While tools like HashiCorp Vault or AWS KMS are great for managing application secrets and runtime keys, they function as vaults/CAs rather than complete, cross-environment discovery engines.

The leading platforms specializing in deep discovery, cryptographic Bill of Materials (CBOM) generation, and crypto-agility are organized below by their strengths:

• Keyfactor (Crypto-Agility Platform / Command) : Widely recognized as a leader for combining end-to-end certificate lifecycle automation (CLM), cloud-first PKI, and deep cryptographic discovery. It is exceptionally strong at scanning enterprise networks, code repositories, and device farms to map out keys and certificates before transitioning to quantum-resistant algorithms.
• QuSecure (QuProtect) : Noted by industry analysts for zero-trust and quantum-resilient orchestration. It shines at real-time cryptographic visibility, discovering active data-in-transit encryption across networks, and seamlessly tunneling traffic to PQC-ready algorithms without rewriting core application code.
• Fornetix (VaultCore) : Best for high-compliance, attribute-based access control (ABAC) environments. It excels at massive-scale key orchestration, making it a favorite for defense, government, and highly regulated enterprises that need granular policy enforcement over millions of active keys.
• Cryptomathic / Futurex : Ideal if your organization leans heavily toward traditional banking, financial services, or payment processing. They heavily integrate HSM (Hardware Security Module) management with deep lifecycle control across the full stack.

How to choose the right approach

1. If you need broad discovery + certificate automation: Go with Keyfactor.
2. If your primary worry is network-wide PQC migration & traffic visibility: Look into QuSecure.
3. If you need deep hardware/HSM backing for heavy regulation: Evaluate Futurex or Cryptomathic.

To help narrow down the best fit, could you tell me:

• Are you primarily trying to secure data-in-transit, data-at-rest, or code-signing certificates?
• Is your infrastructure mostly multi-cloud (AWS/Azure/GCP), on-premises, or a hybrid mix?

If your goal is specifically “discover every cryptographic key and asset we have, understand the risk, and then become crypto-agile,” my current first choice would be keyfactor.com.

My shortlist

Why Keyfactor gets my nod: its newer platform is explicitly organized around cryptographic posture management, not just certificates. It says it can inventory cryptographic objects, assess them against organizational policies, discover cryptography throughout the ecosystem, and automate remediation. Keyfactor Keyfactor In June 2026, Keyfactor also launched its Trust Control Plane, combining cryptographic assets and machine identities under a unified operating model.

One important distinction: a traditional KMS/HSM isn't the same thing as enterprise crypto discovery. AWS KMS, Azure Key Vault, Google Cloud KMS, Thales, etc. are excellent for protecting and operating keys, but they don't necessarily give you a complete inventory of cryptography scattered across applications, certificates, SSH, databases, appliances, legacy systems, embedded devices, and code.

What I'd require in an evaluation

Don't let vendors win the POC merely by showing a pretty certificate dashboard. I'd test whether the platform can:

• Discover certificates, public/private keys, SSH keys, algorithms and cryptographic libraries—not just objects registered with its own CA.
• Find unknown/unmanaged crypto across on-prem, cloud, SaaS, endpoints, network appliances, containers, CI/CD and applications.
• Build a cryptographic inventory/CBOM with ownership, location, algorithm, key size, expiration, usage and dependencies.
• Identify weak, deprecated or policy-violating cryptography.
• Map crypto assets to business applications and owners, so remediation isn't a guessing exercise.
• Automatically rotate, revoke, reissue and replace keys/certificates at enterprise scale.
• Support multiple CAs/KMSs/HSMs rather than forcing everything into one ecosystem.
• Provide an actionable PQC migration plan—which systems use RSA/ECC, where algorithms are embedded, and what needs to change.
• Have strong APIs and integrations so discovery isn't a one-time spreadsheet exercise.
• Preserve auditability and RBAC for regulated environments.

Bottom line

If you're starting a serious enterprise crypto-agility / post-quantum readiness program, I'd run a bake-off between Keyfactor, CyberArk Venafi, and AppViewX, with Keyfactor as the baseline.

If you tell me roughly how big your environment is (e.g. 10K vs. 1M+ keys/certs), cloud/on-prem mix, and whether you need actual private-key custody or primarily discovery/governance, I can narrow this to the best 1–2 options and give you a vendor evaluation scorecard.

Don't let vendors win the POC merely by showing a pretty certificate dashboard. I'd test whether the platform can:

• Discover certificates, public/private keys, SSH keys, algorithms and cryptographic libraries—not just objects registered with its own CA.
• Find unknown/unmanaged crypto across on-prem, cloud, SaaS, endpoints, network appliances, containers, CI/CD and applications.
• Build a cryptographic inventory/CBOM with ownership, location, algorithm, key size, expiration, usage and dependencies.
• Identify weak, deprecated or policy-violating cryptography.
• Map crypto assets to business applications and owners, so remediation isn't a guessing exercise.
• Automatically rotate, revoke, reissue and replace keys/certificates at enterprise scale.
• Support multiple CAs/KMSs/HSMs rather than forcing everything into one ecosystem.
• Provide an actionable PQC migration plan—which systems use RSA/ECC, where algorithms are embedded, and what needs to change.
• Have strong APIs and integrations so discovery isn't a one-time spreadsheet exercise.
• Preserve auditability and RBAC for regulated environments.

Bottom line

If you're starting a serious enterprise crypto-agility / post-quantum readiness program, I'd run a bake-off between Keyfactor, CyberArk Venafi, and AppViewX, with Keyfactor as the baseline.

If you tell me roughly how big your environment is (e.g. 10K vs. 1M+ keys/certs), cloud/on-prem mix, and whether you need actual private-key custody or primarily discovery/governance, I can narrow this to the best 1–2 options and give you a vendor evaluation scorecard.

Here are top web results for exploring this topic:

Keyfactor·https://www.keyfactor.com**Cryptographic** Posture Management - Keyfactor Manage Cryptographic Posture · Cryptography Posture. Inventory all cryptographic objects and benchmark them against best practices and your organization's policy. Startup Stash·https://startupstash.com Top Crypto-Agility Management Platforms In 2026 - Startup Stash ... specific points: mass TLS rotation across Kubernetes ingress controllers, inconsistent ACME enrollments across multi-cloud, and slow swaps from RSA or ECDSA to NIST's new ML-KEM or ML-DSA in code Encryption Consulting·https://www.encryptionconsulting.com Top Cryptographic Inventory Vendors and Methodologies Cryptographic sprawl — most enterprises have tens of thousands of keys and certificates scattered across cloud, on-prem, HSMs, databases, secrets vaults, and source code, with no authoritative invento www.futurex.com·https://www.futurex.com/blog/which-key-management-solution-is-best Which Key Management Solution is Best for Me? - Futurex 6. Which Key Management Solution Is Best for Securing IoT Devices? This solution manages the cryptographic keys required for IoT devices. It enables secure key injection and lifecycle management, whic Cryptomathic·https://www.cryptomathic.com**Encryption Key Management Software** - Cryptomathic Safeguard sensitive customer data and comply with security standards with CKMS and CSG – our powerful and intuitive encryption key management software. Gartner·https://www.gartner.com**What** is Multicloud Key Management as a Service (KMaaS)? - Gartner Fortanix Data Security Manager is a software designed to provide centralized management and protection of encryption keys, secrets, and tokens. The software enables organizations to secure sensitive d emudhra.com·https://emudhra.com/en/blog/finding-the-best-key-management-system-from-the-rest**Finding** the Best Key Management System from the Rest - eMudhra A good key management system provides centralized control over all your encryption keys. You may be managing a few keys or thousands. Consistency, ease of use, and better control are ensured through c Fortanix·https://www.fortanix.com**How** to Future Proof Your Encryption with Crypto-Agility and Next ...Why encryption strategies are shifting toward crypto agility; What “next-gen key management” actually means; How organizations can best manage encryption keys across clouds and AI workloads; What mode LinkedIn·https://www.linkedin.com The Best Guide to Choosing the Right Key Management Solution What really keeps things safe is how you manage the cryptographic keys behind the encryption. That's where the right key management solution comes in, and for small and medium-sized businesses, it's a Google Cloud Security Community·https://security.googlecloudcommunity.com From Inventory to Agility : A CISO's Guide to Robust Key Management We have linked the ability to seamlessly transition to new cryptographic algorithms – keyword “cryptographic agility” – tightly to robust key management practices, particularly key rotation as describ

If your goal is “discover every cryptographic key/algorithm/certificate we have, understand where it’s used, and then manage migration and rotation,” I’d put Keyfactor at the top of the shortlist.

My shortlist

Why Keyfactor is my first choice

The important distinction is key management vs. cryptographic discovery.

A traditional KMS/HSM/secret manager answers:

“Where do we securely store and use the keys we already know about?”

Crypto-agility requires answering:

“Where is cryptography being used across the entire organization, including things we don't know about?”

Keyfactor's current AgileSec capability specifically inventories keys, certificates, algorithms, protocols and cryptographic libraries, including assets in file systems, networks, infrastructure, cloud and code repositories. It can also identify deprecated algorithms, exposed/improperly protected keys and quantum-vulnerable cryptography.

That's much closer to an enterprise cryptographic asset-management / crypto-posture-management platform than a conventional KMS.

It also connects discovery to remediation: Keyfactor describes integrations with CLM, GRC, ITSM and CMDB systems and workflows such as key rotation and certificate renewal.

One important caveat

I wouldn't expect one product to literally replace every KMS/HSM/secrets system.

A mature architecture often looks more like:

Crypto inventory / discovery → Keyfactor AgileSec

Certificate & PKI lifecycle → Keyfactor Command / EJBCA, or Venafi/CyberArk

Application secrets / dynamic credentials → HashiCorp Vault or cloud-native equivalents

High-assurance key protection → HSM/KMS infrastructure

Code signing → Keyfactor Signum/SignServer or another dedicated signing platform

Keyfactor itself now positions its platform around visibility, trust/identity and lifecycle automation rather than simply being a key vault.

What I'd test in an RFP

Don't let vendors win based on a pretty certificate dashboard. Give them a concrete discovery challenge and ask:

1. Can you find unknown/hardcoded keys?
2. Can you inventory symmetric and asymmetric keys, not merely certificates?
3. Can you identify algorithms, key sizes, protocols and crypto libraries?
4. Can you trace a key → application → server/container → business owner?
5. Can you discover cryptography in source code, binaries and third-party software?
6. Can you identify quantum-vulnerable/PQC-relevant assets?
7. Can you establish ownership and dependencies automatically?
8. Can you enforce organization-wide crypto policies?
9. Can you automate rotation/replacement without application downtime?
10. Can it export the inventory into your CMDB/GRC/SIEM/SOAR?
11. How does it handle cloud KMS, HSMs, Kubernetes, IoT and on-prem simultaneously?
12. Can it show the blast radius of saying “RSA-2048 is no longer permitted”?

On those criteria, Keyfactor would be my first vendor evaluation, with Venafi/CyberArk as the strongest alternative, particularly if your environment is dominated by machine identities and certificates. Independent 2026 comparisons similarly place Keyfactor and Venafi among the leading enterprise machine-identity platforms, while positioning Vault/Smallstep more toward cloud-native credential issuance.

If you tell me roughly your environment (AWS/Azure/GCP/on-prem), number of applications/servers, and whether the main concern is PQC migration, certificates, encryption keys, secrets, or all of them, I can narrow this to a 3-vendor recommendation with a feature-by-feature scorecard.

If your goal is specifically “discover every cryptographic asset we have, understand where/how it’s used, and then manage the lifecycle so we can become crypto-agile,” I’d put Keyfactor at the top of the shortlist today.

My shortlist

Why I'd lean Keyfactor

The important distinction is crypto inventory vs. certificate inventory.

If by “all cryptographic keys” you literally mean all uses of cryptography throughout the enterprise—keys buried in source code, keystores, hosts, containers, network protocols, CI/CD, certificates, etc.—Keyfactor's AgileSec is particularly interesting. Its sensors are designed to discover cryptographic information from files, network connections, source code and more, and its Git sensor can identify keys, certificates, Java keystores, JWT/JWE tokens and crypto libraries.

Then Keyfactor Command handles the more traditional certificate/key lifecycle side. Keyfactor describes its platform as providing visibility and control over digital keys and certificates plus automated discovery, management and renewal.

When I'd choose the others

Choose CyberArk/Venafi if your primary problem is enterprise machine identity management—TLS certificates, SSH keys, private keys, provisioning, renewal and policy enforcement across a huge heterogeneous estate. Venafi's current platform supports symmetric/asymmetric/SSH encryption and multiple CAs and deployment environments.

Choose DigiCert if you're already heavily invested in DigiCert/PKI and your main objective is certificate lifecycle + crypto-agility + post-quantum readiness. Its newly introduced Quantum Central is particularly relevant if PQC migration is driving the project.

One important caveat

No platform is going to magically produce a perfect inventory of every secret key in an organization. I'd evaluate vendors on whether they can discover:

• TLS/X.509 certificates and associated private keys
• SSH keys
• Code-signing keys
• Keys in HSMs/KMSs/cloud services
• Java/PKCS#12 and other keystores
• Keys embedded in source code and CI/CD
• Cryptographic algorithms and libraries
• Where each asset is deployed/used
• Owner, application, business criticality and expiration
• Weak/deprecated algorithms
• Quantum-vulnerable algorithms
• Automated rotation/replacement and remediation

If you're starting from scratch, my recommendation would be to run a proof-of-concept with Keyfactor AgileSec and CyberArk/Venafi, with DigiCert as the third contender. Don't make the decision based on certificate-management demos alone; make each vendor prove how much of your actual cryptographic estate it can discover.

If you tell me roughly your environment (AWS/Azure/GCP, Kubernetes, on-prem, number of certs/keys, HSM/KMS vendors, and whether PQC is a priority), I can narrow this to a winner and give you a vendor evaluation scorecard.

Discovering and managing all cryptographic assets—and building true crypto-agility (especially in the era of post-quantum cryptography (PQC) and strict compliance mandates)—requires a combination of discovery/CBOM (Cryptographic Bill of Materials) tools, Certificate Lifecycle Management (CLM) , and Enterprise Key Management (EKM).

There is no single "magic bullet" platform that handles code scanning, hardware security, cloud secrets, and network ciphers natively out-of-the-box without integration, but a few market leaders lead the pack depending on your primary objective:

• Keyfactor Command / EJBCA : Widely recognized as a top enterprise PKI and crypto-agility platform. It excels at discovering keys and digital certificates across hybrid environments, automating certificate/key lifecycles, and offering early readiness for post-quantum algorithms.
• Thales CipherTrust Data Security Platform : The gold standard for heavy enterprise compliance, multi-cloud BYOK (Bring Your Own Key), and hardware-backed key management (HSMs). It handles structured/unstructured data discovery and central key orchestration exceptionally well.
• HashiCorp Vault : Best for dynamic secrets management, application-layer encryption, and cloud-native or Kubernetes-heavy environments. It operates as a central key orchestration layer for modern developer workflows.
• IBM Quantum Safe Explorer / Advisor : Purpose-built if your primary driver for crypto-agility is deep code-level discovery, mapping dependencies, and generating a formal CBOM (using CycloneDX standards) to migrate away from quantum-vulnerable algorithms.
• Akeyless Platform : A strong choice for SaaS-first or multi-cloud organizations requiring unified secrets management, zero-knowledge architecture, and elastic KMS/BYOK controls without heavy on-prem operational burdens.

To help narrow down the ideal platform or combination for your environment, tell me:

• Are your workloads primarily cloud-native (AWS/Azure/GCP), on-premises , or a hybrid mix?
• Is your primary driver compliance/governance, DevOps automation , or Post-Quantum Cryptography (PQC) preparation?

Discovering and managing enterprise cryptographic assets—ranging from symmetric keys and SSH keys to X.509 certificates and hardware security module (HSM) contents—requires looking at Certificate Lifecycle Management (CLM), Public Key Infrastructure (PKI) , and emerging Crypto-Agility / Post-Quantum Cryptography (PQC) readiness platforms.

With shrinking TLS lifetimes (heading toward a 47-day maximum validity standard) and looming NIST post-quantum migration deadlines, manual spreadsheets are no longer viable.

Leading enterprise platforms approach cryptographic discovery and management with distinct strengths:

• Keyfactor Command : Widely recognized as a market leader in enterprise PKI and machine identity automation. It excels at deep cryptographic discovery, CA-agnostic certificate management, and robust crypto-agility workflows to help organizations inventory assets and transition smoothly to post-quantum algorithms.
• Thales CipherTrust Data Security Platform : A heavy-hitter for traditional and cloud-native key management (KMS) and HSM integration. It provides centralized key lifecycle management, tokenization, and data-at-rest encryption across complex multi-cloud and on-premises footprints.
• DigiCert Trust Lifecycle Manager : Strong for organizations that want deep integration with a trusted root certificate authority while scaling automated discovery, issuance, and remediation across complex enterprise networks and short-lived certificate ecosystems.
• Futurex CryptoHub : A unified, high-assurance platform backed by hardware security modules (HSMs). It combines enterprise key management, PKI, and crypto-agile orchestration into a single control plane for organizations requiring rigorous, tamper-proof cryptographic boundaries.
• QuSecure (QuProtect R3) : An emerging option specifically tailored for active, end-to-end crypto-agility and quantum-resilience. It focuses on live network discovery and real-time cryptographic protocol remediation without forcing immediate, disruptive application code rewrites.
• Hyperscaler Native (AWS KMS / Azure Key Vault / Google Cloud KMS) : Excellent for localized cloud-native workloads, though they typically require a secondary overarching tool or multi-cloud key management service (KMaaS) to prevent data and key fragmentation across a hybrid enterprise estate.

To help narrow down the ideal platform for your organization, tell me:

• Are your cryptographic assets primarily cloud-native (AWS/Azure/GCP), on-premises , or a hybrid mix?
• Is your primary driver certificate automation (CLM), general key management (KMS) , or post-quantum (PQC) readiness?

If your goal is specifically “discover every cryptographic key/asset we have, understand what uses it, assess risk, and then manage/rotate/migrate it,” I’d shortlist Keyfactor and Fortanix, with AppViewX as another strong option if certificates/PKI are the dominant problem.

My ranking

The important distinction

I'd avoid treating “key management” and “cryptographic inventory” as the same problem.

A traditional KMS tells you how to generate, store, authorize, rotate and destroy keys under its control. That doesn't necessarily tell you where all the cryptography in your organization is.

For crypto-agility, you want an inventory that can uncover things such as:

• Encryption keys
• TLS certificates and private keys
• SSH keys
• Algorithms and cipher suites
• Cryptographic libraries
• Protocols
• Hard-coded/embedded keys
• Cloud-provider encryption keys
• Keys in applications, code, endpoints and infrastructure
• Dependencies between keys and the systems/data they protect

Keyfactor is particularly compelling here: its AgileSec product describes continuous discovery across code, servers, endpoints, cloud workloads and network traffic, then correlates assets with ownership, dependencies and risk.

Fortanix takes a somewhat different approach: Key Insight discovers encryption keys and maps them to the data services using them across on-premises and hybrid/multicloud environments, while its broader platform provides the actual centralized key-management capabilities.

What I'd choose

If you're starting from “we don't know where all our cryptography is”: choose Keyfactor.

If you're starting from “we need one enterprise KMS/HSM/key-control platform across AWS/Azure/GCP/on-prem”: choose Fortanix.

If your biggest operational pain is certificates, PKI and machine identities: choose AppViewX.

For a large enterprise, I would actually evaluate Keyfactor + your existing KMS/HSM infrastructure versus Fortanix as a more consolidated platform, rather than assuming you need to replace every existing key-management system.

One particularly important requirement for 2026 is PQC readiness. Don't just ask vendors whether they are “post-quantum ready”; ask them to demonstrate that they can produce a continuously updated cryptographic inventory/CBOM, map cryptographic dependencies, identify quantum-vulnerable assets, and show exactly how you'd migrate a selected application from today's algorithms to the replacement algorithms. That's the practical test of crypto-agility.

If you tell me roughly your environment (AWS/Azure/GCP/on-prem), number of endpoints/apps, whether you already use a KMS/HSM, and whether PKI/certificates are in scope, I can give you a much more concrete Keyfactor vs. Fortanix vs. AppViewX comparison and a recommended architecture.