Conducting a cryptographic inventory is a foundational best practice for managing security risk, meeting compliance requirements, and enabling cryptographic agility. The White House has identified it as the first and most critical step organizations must take in preparing for the transition to a quantum-safe environment. Regulators in the US, Singapore, and the EU have issued advisory notes recommending its implementation, and standards bodies including NIST, the NCCoE, FS-ISAC, PCI-SSC, and ETSI have increased their focus on the development and adoption of comprehensive cryptographic inventories.
Yet many organizations still rely on partial, manual, or outdated records that fail to capture where cryptography actually lives. Cryptographic keys, certificates, and algorithms are embedded in applications, filesystems, network interfaces, hardware devices, cloud services, and legacy systems, making them difficult to locate without dedicated tooling and deliberate processes. Traditional vulnerability and threat management tools are not designed to build a cryptographic inventory; they focus on a diverse range of threats, only some of which are related to cryptography.
This guide explains how to conduct a cryptographic inventory using best practices that account for three important components of the modern enterprise: cloud environments, pipelines for continuous integration and deployment (CI/CD), and connected devices.
What is a Cryptographic Inventory?
A cryptographic inventory is a centralized, continuously updated record of all cryptographic assets used across an organization. It is a dynamic, comprehensive, and systematic record of all current and evolving instances of cryptographic assets within an organization’s extended digital infrastructure.
A modern cryptographic inventory goes far beyond static spreadsheets. It reflects real-time usage and risk exposure across infrastructure, applications, and devices, and aims to provide a unified and detailed view of where and how cryptographic objects are deployed. At its core, a cryptographic inventory seeks to answer several critical questions:
- What do we have?
A complete record of all cryptographic objects deployed within the organization, including those within purchased or acquired third-party applications.
- Where are the assets?
The exact location of cryptographic objects within and across infrastructures.
- How effective are they?
Whether the deployed cryptography delivers the expected outcomes and is a good fit for its intended use case.
- What level of confidence do we have?
Evaluating identities against zero-trust policies, quality of key generation, and cryptography strength relative to organizational needs.
- What do we need to do first?
Prioritized, actionable insights for remediation activities such as addressing security gaps, compliance requirements, and quantum-safe transition planning.
The scope of a cryptographic inventory encompasses a wide range of assets, including certificates, keys, algorithms, repositories, protocols, and libraries, across all environments where these objects are utilized.
Why Cryptographic Inventory is a Best Practice for Cryptographic Agility
Without a complete inventory, organizations cannot safely perform basic maintenance of their cryptographic infrastructure, such as rotating certificates, replacing algorithms, or appropriately responding to new threats. Cryptographic agility — the ability to switch rapidly and efficiently between cryptographic algorithms, libraries, keys, certificates, and protocols without major operational disruption — cannot be achieved without a solid cryptographic inventory in place.
As cryptographic algorithms must be replaced periodically, and because different jurisdictions impose varying cryptographic requirements, systems must be designed to accommodate algorithm changes smoothly. Enabling such flexibility is no longer optional: it is essential for long-term security, interoperability, and regulatory compliance.
Outcomes from following best practices of a cryptographic inventory include:
- Reduced risk of certificate outages.
This can be caused by expired or unknown certificates. Automated discovery and lifecycle tracking ensure certificates do not silently expire in production.
- Faster response to algorithm deprecation or vulnerability disclosures.
When new CVEs and CWEs are discovered, organizations with a comprehensive inventory can quickly identify affected assets and trigger remediation, or even automatic updates if configured.
- Stronger audit and compliance readiness.
Regulatory environments are demonstrating increasing intent to ensure evolving standards are embraced. Compliance with such standards reduces the risk of legal fines and penalties in an environment where regulations evolve.
- A practical foundation for post-quantum cryptography planning.
The quantum-safe transition will be a significant, multi-year maturity journey that touches every part of an organization and its value chain. A cryptographic inventory provides the visibility needed to identify which resources are most exposed to quantum risk and to prioritize the practical response.
What to Include in a Cryptographic Inventory (Best Practices)
Effective cryptographic inventories extend far beyond digital certificates. A best-practice inventory should capture cryptographic assets across three broad categories: operational cryptography, software cryptography, and network cryptography.
A best-practice inventory should include:
- Certificates:
public, private, internal, self-signed, end-entity certificates, root certificate authorities, and trust stores used for TLS, mutual TLS (mTLS), signing, and other purposes.
- Cryptographic keys and key stores:
private and public keys, secret symmetric keys, keystores, tokens, and other cryptographic secrets deployed in systems, including those managed by HSMs, KMSs, and key vaults.
- Algorithms, protocols, and their parameters and configurations:
including key sizes, cipher suites, key exchange mechanisms, message authentication codes, and other cryptographic elements. The inventory should document not only which algorithms are supported, but how systems are specifically configured to use them.
- Cryptographic libraries and APIs:
libraries linked to software or hardware systems to perform cryptographic operations (e.g., OpenSSL, Bouncy Castle), including version information and known vulnerabilities.
- Certificate authorities:
both internal and external CAs, and how they are managed across the organization.
- Trust anchors and roots of trust:
root-of-trust integrated within hardware security components, including those that cannot be modified.
Incomplete inventories are one of the primary reasons cryptographic migrations stall or fail. A Cryptographic Bill of Materials (CBOM) provides visibility into the built-in capabilities of software, but it does not include information about how applications are configured within a specific environment. An organization’s cryptographic inventory must encompass the full picture: built-in capabilities, runtime configuration, and actual cryptographic usage.
Step 1: Discover Cryptographic Assets Across Cloud Environments
Cloud platforms dramatically increase cryptographic sprawl. Cryptographic keys, certificates, and algorithms are embedded across a heterogeneous mix of cloud services, and the dynamic nature of cloud environments means new cryptographic objects are constantly being introduced, updated, or decommissioned.
Best practices for cloud cryptographic inventory include:
- Discover certificates and keys across IaaS, PaaS, and managed services.
This includes cryptographic configuration and identity material deployed within core systems running on third-party infrastructure and platforms (IaaS and PaaS), such as compute instances, managed databases, API gateways, and container orchestration platforms.
- Identify cryptography embedded in individual mechanisms.
Load balancers, gateways, service meshes, and other network infrastructure units are included in this caregory. These components often maintain their own certificate stores and cryptographic configurations that may not be centrally visible.
- Track ownership and lifecycle status for cloud-native certificates.
Assign clear ownership of each cryptographic asset to ensure accountability and faster remediation when issues arise. Understanding the value and sensitivity of the data or systems being protected helps prioritize discovery efforts.
Remote infrastructure environments are constantly evolving with new deployments, updates, and configurations, Therefore, cloud discovery of cryptographic assets must be automated and continuous to remain accurate at scale. Manual discovery simply cannot keep up with the pace of change in cloud-native architectures. Automated solutions can track the lifecycle of cryptographic keys and certificates, assess cryptographic adequacy, and trigger changes when needed. It is equally important to identify cryptographic usage beyond currently managed assets (such as unmanaged network certificates, embedded keys, and external KMS deployments) to achieve complete visibility into the organization’s cryptographic landscape.
Step 2: Inventory Cryptography Embedded in CI/CD Pipelines
CI/CD pipelines are automated workflows that build, test, and deploy software changes from version control to production in a consistent, repeatable way. By the way they are utilized, they become a common blind spot in cryptographic inventories. Software cryptography — cryptographic capabilities and identity material built into applications by development teams — often escapes traditional security scanning.
Best practices include:
- Scanning pipelines for certificates, keys, and secrets used in builds.
Binary objects in CI/CD pipelines may contain embedded cryptographic material that is not visible through network-level scanning alone.
- Identifying cryptographic libraries used in source code or embedded in compiled binaries.
A CBOM can help formalize visibility into the cryptographic capabilities built into each application version, including algorithms (e.g., AES-256, RSA-2048), libraries (e.g., OpenSSL, Bouncy Castle), and supported key types.
- Detecting hard-coded or reused keys.
Stale, hardcoded, reused or revoked keys found in any component across the pipeline represent hidden risks that automated discovery tools can identify and flag for remediation.
Without CI/CD visibility, organizations risk deploying insecure or non-compliant cryptography into production environments. Since cryptography is now an integral part of any modern software, cryptographic agility should be on par with agile software development best practices. This means embedding cryptographic inventory practices into the development lifecycle itself, rather than treating it as a post-deployment concern.
Step 3: Account for Devices, Firmware, and Long-Lived Assets
Devices and firmware introduce unique cryptographic inventory challenges. Hardware cryptography — cryptography used to secure cyber-physical systems such as IoT and edge devices, embedded trust modules, cryptographic chips, and industrial controllers — requires specialized discovery approaches.
Inventory best practices for devices include:
- Tracking device identities and embedded certificates.
This includes root of trust stored and protected within dedicated hardware, cryptographic keys in dedicated hardware, and the cryptographic capabilities supported by each device.
- Identifying long-lived signatures used in firmware and software updates.
Digital signatures that are trusted for a long time, such as in firmware on long-lived IoT devices and roots of trust, represent high-priority assets for quantum-safe transition planning.
- Mapping cryptographic dependencies for IoT, OT, and edge devices.
These assets may have limited interoperability across an organization’s estate, and many include implementations of cryptography that predate current best practices.
These assets are often the most difficult and most critical to migrate when algorithms change. Devices deployed in the field may operate for a decade or longer, making them particularly vulnerable to Harvest Now, Decrypt Later attacks, where malicious actors harvest encrypted data today with the intent to decrypt it when quantum computers become available.
Step 4: Centralize Inventory Data for Visibility and Control
Discovery alone is not enough. The principle of establishing a dynamic, trusted repository of cryptography-relevant data designed to enable users and systems to make decisions and take actions, is essential for turning raw discovery data into operational value.
Best-practice inventories are:
- Centralized in a single authoritative system.
The goal is to have one or more trusted sources that can be relied on by other systems for decision-making and action. While a federated approach with multiple inventories is sometimes necessary (particularly when local regulation requires local storage of cryptographic assets), there must ultimately be a single source of truth enabling better control and oversight.
- Continuously updated through automation.
Automated solutions ensure the cryptographic inventory is updated in near real-time, enabling security teams to act on threats, prevent service disruptions, facilitate compliance reporting, and conduct forensic analysis.
- Searchable by asset type, algorithm, owner, and risk level.
Capturing context through metadata — including asset criticality, ownership and responsibility, associated vulnerabilities, and regulatory compliance requirements — is critical for reaching the right conclusions and enabling remediation.
Centralization enables security teams to act quickly when cryptographic changes are required. Without centralized visibility, identified vulnerabilities cannot be promptly addressed by the appropriate accountable teams, and the organization lacks the unified view needed to prioritize remediation at scale.
A comprehensive cryptographic asset inventory depends not only on discovering individual assets, but also on consolidating data across the broader technology ecosystem. Integrating information from existing platforms enables organizations to build a more accurate and continuously updated view of their cryptographic posture. Leveraging the existing ecosystem of technologies is therefore essential for achieving visibility, reducing blind spots, and maintaining operational scalability.
Step 5: Enrich the Inventory with Risk and Compliance Context
A cryptographic inventory becomes actionable when risk is layered in. Information grows in value when it is contextualized and converted into actionable insights, transforming raw data into a decision-making tool.
Best practices include:
- Flagging expired, weak, or non-compliant cryptographic assets.
This includes expiring certificates, non-compliant and self-signed certificates, out-of-date algorithms, protocols, or libraries, and insecure key sizes.
- Identifying outdated algorithms, incorrect configurations, and insecure parameters.
Organizations need to evaluate whether their deployed cryptography delivers the expected outcomes and is fit for purpose, not just whether it exists.
- Prioritizing assets based on business criticality and exposure.
A risk-based approach involves mapping out the entire technology stack, assessing the security posture of each asset, and prioritizing those that protect privileged data or are integral to key business operations in relation to critical enterprise risk scenarios.
This transforms the inventory from documentation into a decision-making tool. With prioritized scoring, administrators can efficiently target remediation efforts, addressing the most critical risks first. Vulnerable certificates can be renewed or revoked, and automation further enhances efficiency by enabling seamless remediation while supporting approval workflows for sensitive or high-risk assets.
Step 6: Keep the Inventory Accurate Over Time
Static inventories decay quickly. Large-scale dynamic IT environments are constantly evolving with new deployments, updates, and configurations. Without continuous maintenance, a cryptographic inventory rapidly becomes incomplete and unreliable.
Ongoing best practices include:
- Automate discovery and updates.
This includes monitoring changes to vendor libraries, new CVEs, potentially compromised keys, new regulations or recommendations, and changes in cryptographic standards. Automation systems can track the lifecycle of cryptographic keys and certificates, assess cryptographic adequacy, and trigger changes if needed.
- Integrate inventory with certificate lifecycle management workflows.
Linking discovery, risk assessment, and remediation into a unified lifecycle ensures that the inventory remains accurate as certificates are issued, renewed, revoked, and replaced.
- Review inventory data regularly as part of security operations.
Agile lifecycle management of cryptographic assets is an important aspect of cybersecurity operations and resilience. When new vulnerabilities are discovered, a current inventory enables assets to be updated quickly.
Continuous maintenance is essential for sustaining cryptographic agility in dynamic environments. The cryptographic discovery process must be ongoing, not a one-time project. This allows enterprises to keep pace with the fast rate of change in modern infrastructure.
Common Cryptographic Inventory Mistakes to Avoid
- Relying on spreadsheets or manual tracking.
Building a cryptographic inventory manually is challenging at scale. Manual processes struggle to keep up with continuous changes occurring within an infrastructure, and traditional vulnerability tools are not designed for this purpose.
- Inventorying certificates but ignoring keys, algorithms, and libraries.
Keys may have been poorly generated or compromised. Algorithms can be misconfigured or no longer considered safe. Libraries can be home-brewed, outdated, or contain known vulnerabilities. A comprehensive inventory must cover the full range of cryptographic assets.
- Treating discovery as a one-time project.
The technology stack is subject to constant changes, with new deployments, updates, and configurations. It is crucial to keep the cryptographic inventory up-to-date as new cryptographic objects are introduced or removed from the infrastructure.
- Failing to account for cloud-hosted data and workloads, CI/CD, and device cryptography.
Cryptographic keys, certificates, and algorithms can be hidden in heterogeneous sources across diverse IT environments, including compiled applications, cloud services, hardware devices, and legacy systems. Blind spots in any of these areas undermine the value of the entire inventory.
Avoiding these pitfalls significantly improves long-term cryptographic resilience and positions the organization for a smoother transition to quantum-safe standards.
Supporting Cryptographic Inventory Best Practices with Keyfactor
Building and maintaining a cryptographic inventory that is continuous, automated, and centralized requires more than good intentions—it requires purpose-built tooling. Moving from best practices to implementation means adopting solutions that can match the scale, complexity, and pace of change in modern enterprise environments.
How Keyfactor Enables Cryptographic Inventory Best Practices
Keyfactor, together with InfoSec Global (a Keyfactor company), delivers integrated capabilities that directly support cryptographic inventory best practices:
- Automated discovery across cloud, hybrid, and on-prem environments.
By combining the proprietary search methods of Command‘s orchestrators and AgileSec Analytics’ sensors, the solution delivers a comprehensive inventory of an organization’s cryptographic assets — certificates, key management systems, crypto libraries, HSMs, network endpoints, cloud workloads, and load balancers.
- Visibility into algorithms, key sizes, and expiration status.
AgileSec Analytics proactively detects potential cryptographic vulnerabilities, misuse, or compliance breaches, and prioritizes them based on a technical severity score.
- Detection of cryptography in CI/CD pipelines and embedded binaries.
Binary objects in CI/CD pipelines are covered by the discovery process, ensuring that cryptographic assets introduced during development are tracked alongside those in production.
- Centralized management of internal and external CAs.
Keyfactor Command provides enterprise-wide visibility of all certificate authorities and machine identities, enabling organizations to identify algorithms in use and define policies and automated workflows.
- Integration with lifecycle automation workflows.
Automated processes for certificate renewal, provisioning, and revocation enable organizations to replace outdated algorithms and keys and clean up expired certificates at scale, with approval workflows for sensitive or high-risk assets.
Strategic Benefits
- The inventory becomes actionable, continuously updated and enriched with risk context, not just a static database.
- Faster remediation of weak or non-compliant assets through prioritized scoring and one-click (or automated) renewal and revocation.
- Lower certificate outage risks by maintaining complete, real-time visibility across the entire cryptographic landscape.
- A foundation for cryptographic agility and PQC readiness, including built-in support for testing hybrid and post-quantum certificates with Keyfactor EJBCA, and quantum-resistant code signing with Keyfactor SignServer.
Ready to move from best practices to implementation? Explore how Keyfactor can help you build a comprehensive cryptographic inventory and accelerate your path to cryptographic agility:
- Certificate Discovery: Establish enterprise-wide visibility of all machine identities and certificates.
- Certificate Lifecycle Automation: Automate certificate renewal, provisioning, and revocation at scale.
- Request a Demo: See how Keyfactor and AgileSec Analytics work together to deliver 360-degree cryptographic visibility and control.
Cryptographic Inventory FAQs:
How often should a cryptographic inventory be updated?
Continuously. Best practices rely on automated discovery rather than periodic manual reviews. The continuous stream of new deployments, updates, and configurations create a technology environment that is continuously changing, and automation ensures the cryptographic inventory is updated in near real-time. This enables security teams to act on threats, prevent service disruptions, and facilitate compliance reporting without relying on scheduled audits.
Is a cryptographic inventory required for post-quantum cryptography?
Yes. Without knowing where algorithms and certificates are used, PQC migration cannot be executed safely. The White House has mandated federal agencies to build a cryptographic inventory as the critical first step in preparing for the quantum-safe transition. Quantum computers capable of breaking public-key cryptography are expected to become available within 5 to 15 years, and the transition to quantum-resistant algorithms will touch every part of an organization’s infrastructure.
Who should own the cryptographic inventory?
Ownership typically spans security, platform, and infrastructure teams, with centralized visibility and governance. In practice, a C-level executive (such as the CISO) should be made accountable for cryptography management, while operational responsibility may be centralized or distributed across groups including DevSecOps, IT, a dedicated cryptographic team, and security compliance. Using a RACI model (Responsible, Accountable, Consulted, Informed) helps ensure that cryptography-related decisions are not made without proper expertise.
What processes should be implemented or changed to maintain an updated inventory?
There are several important changes that enable more efficient maintenance of the cryptographic inventory:
- Centralize cryptographic policy and visibility.
Establish a centralized source for cryptographic inventory that serves as the single trusted repository for decision-making across the organization.
- Automate cryptographic asset management.
Deploy automated discovery and lifecycle management tools that can track keys, certificates, algorithms, and libraries across all environments in near real-time.
- Limit provisioning to devices that enable automated management.
Where possible, standardize on infrastructure and devices that support automated cryptographic discovery and management, reducing the share of assets that require manual intervention.
