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CRY-10: Cryptographic Key Management

CRY 10 — Critical Protect

Mechanisms exist to facilitate cryptographic key management controls to protect the confidentiality, integrity and availability of keys.

Renumbered: Formerly CRY-09 in SCF 2025.4.

Code reused: In SCF 2025.4 and earlier, CRY-10 was Transmission of Cybersecurity & Data Protection Attributes. That control is now CRY-11.

Control Question: Does the organization facilitate cryptographic key management controls to protect the confidentiality, integrity and availability of keys?

General (22)
Framework Mapping Values
AICPA Privacy Management Framework (PMF) S7.1-POF10
AICPA TSC 2017:2022 (used for SOC 2) (source) CC6.1 CC6.1-POF10 CC6.1-POF11
CSA CCM 4.1.0 CEK-08 CEK-10 CEK-11 CEK-12 CEK-13 CEK-14 CEK-15 CEK-16 CEK-17 CEK-18 CEK-19 CEK-20 CEK-21 LOG-11
CSA IoT SCF 2 CLS-01 IAM-08 IAM-10 IAM-11 IAM-12 IAM-13 IAM-14 IAM-15 IAM-16 SDV-01 SWS-10
IEC 62443-2-1 2024 DATA 1.6
IEC 62443-4-2 2019 CR 1.9(d) CR 1.9(e) CR 1.9(f)
ISO 27002 2022 8.24
ISO 27017 2015 10.1.2
ISO 27018 2025 8.24 8.24(a)
MPA Content Security Program 5.3.1 TS-3.2
NIST 800-53 R5.2 SC-28(03)
NIST 800-82 R3 SC-28(03)
NIST 800-171 R2 (source) 3.13.10
NIST 800-171 R3 (source) 03.13.10
NIST 800-171A (source) 3.13.10[a] 3.13.10[b]
NIST 800-171A R3 (source) A.03.13.10.ODP[01] A.03.13.10[01] A.03.13.10[02]
NIST CSWP 39 3.3
OWASP Top 10 2025 A04:2025
PCI DSS 4.0.1 (source) 3.5.1.1 3.6 3.6.1 3.6.1.1 3.6.1.2 3.6.1.3 3.6.1.4 3.7 3.7.1 3.7.2 3.7.3 3.7.4 3.7.5 3.7.6 3.7.7 4.2.1.1
PCI DSS 4.0.1 SAQ D Merchant (source) 3.5.1.1 3.6.1 3.6.1.2 3.6.1.3 3.6.1.4 3.7.1 3.7.2 3.7.3 3.7.4 3.7.5 3.7.6 3.7.7 4.2.1.1
PCI DSS 4.0.1 SAQ D Service Provider (source) 3.5.1.1 3.6.1 3.6.1.1 3.6.1.2 3.6.1.3 3.6.1.4 3.7.1 3.7.2 3.7.3 3.7.4 3.7.5 3.7.6 3.7.7 4.2.1.1
SPARTA 4.0 CM0030
US (5)
EMEA (11)
Framework Mapping Values
EMEA Germany C5 2026 OPS-32.03B.5 OPS-32.01AC.4 IAM-08.03B IAM-08.03AS CRY-01.01B.5 CRY-01.01B.6 CRY-05.02B CRY-05.05B CRY-06.01B CRY-07.01B CRY-09.01B CRY-09.02B CRY-10.01B CRY-10.01AC CRY-11.01B CRY-11.01B.1 CRY-11.01B.2 CRY-11.01B.4 CRY-12.01B CRY-13.01B CRY-14.01B CRY-14.01B.1 CRY-14.01B.2 CRY-14.01B.3 CRY-15.01B CRY-17.01B CRY-17.02B CRY-18.01B.4 DEV-12.02B PSS-12.02AC.3
EMEA Spain CCN-STIC 825 op.exp.10 mp.si.2 mp.info.3
EMEA EU DORA RTS 2024 Article 6.2(d) Article 7.1 Article 7.2
EMEA EU NIS2 Annex 2024 9.2(c)(vi) 9.2(c)(vii) 9.2(c)(viii) 9.2(c)(ix) 9.2(c)(x) 9.2(c)(xi) 9.2(c)(xii) 9.3
EMEA UK DEFSTAN 05-138 2024 2319
EMEA UK DEFSTAN 05-138 - L1 2024 2319
EMEA UK DEFSTAN 05-138 - L2 2024 2319
EMEA UK DEFSTAN 05-138 - L3 2024 2319
EMEA LUX CCSF 22/806 2022 68.e
EMEA Saudi Arabia ECC-1 2018 2-8-3-2
EMEA Saudi Arabia SACS-002 2022 VII.B.TPC-55
APAC (7)
Framework Mapping Values
APAC Australia ISM June 2026 ISM-0455 ISM-0507 ISM-2109
APAC India RBI Digital Payments 2021 17.0 67.a 67.c 69.0 70.f 70.h 70.j
APAC Japan ISMAP 10.1.2 10.1.2.1 10.1.2.2 10.1.2.3 10.1.2.4 10.1.2.5 10.1.2.6 10.1.2.7 10.1.2.8 10.1.2.9 10.1.2.10 10.1.2.11 10.1.2.12 10.1.2.13 10.1.2.14 10.1.2.15 10.1.2.16 10.1.2.17 10.1.2.18 10.1.2.19 10.1.2.20.PB
APAC Malaysia RMiT 2025 10.20(b) A5-E1(d) A10-B8(d)
APAC New Zealand NZISM 3.9 17.1.58.C.01 17.1.58.C.02 17.1.58.C.03 23.3.21.C.01 23.3.22.C.01 23.4.9.C.02 23.4.9.C.03
APAC Singapore CCOP CII 2026 5.17.1 5.17.2
APAC Singapore MAS TRM 2021 6.4.5 10.2.1 10.2.2 10.2.3 10.2.4 10.2.5 10.2.6 10.2.8 10.2.10
Americas (4)

Capability Maturity Model

Level 0 — Not Performed

Practices are non-existent, based on the inability to demonstrate an implemented and operational capability. A reasonable person would conclude the control is not being performed.

Level 1 — Performed Informally

SCR-CMM Level 1 criteria definitions are not available for this control: ▪ A reasonable person would conclude this control requires a structured process. ▪ At this level of maturity, the "ad hoc" nature of performing a capability informally would indicate the intent of the control is not met due to a lack of consistency and formality.

Level 2 — Planned & Tracked

Cryptographic Protections (CRY) capabilities are requirements-driven, but are not standardized across the entity (e.g., local/regional level consistency). Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Policies and standards associated with CRY domain capabilities are formally documented and centrally-managed by the entity. ▪ Standardized Operating Procedures (SOP) associated with CRY domain capabilities are documented and maintained by process owners. ▪ IT and/or cybersecurity personnel work with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with CRY domain capabilities to address applicable statutory, regulatory and/or contractual requirements for Technology Assets, Applications, Services and/or Data (TAASD). ▪ Cryptographic management controls-related controls are primarily administrative and preventative in nature (e.g., policies, standards and procedures & guidelines). ▪ Cryptographic management may be a defined function (e.g., team or department) or assigned as an additional duty to existing IT and/or cybersecurity personnel. ▪ Technology Assets, Applications and/or Services (TAAS) that store, process or transmit sensitive/regulated data use cryptographic mechanisms to prevent unauthorized disclosure of information as an alternate to physical safeguards. ▪ External compliance requirements for cryptography are identified and documented, based on applicable laws, regulations and contractual obligations. ▪ IT and/or cybersecurity personnel work with business stakeholders and process owners to implement cryptographic mechanisms that are applicability for statutory, regulatory and/or contractual compliance obligations.

Level 3 — Well Defined

Cryptographic Protections (CRY) capabilities are standardized across the entity for applicability to People, Processes, Technologies, Data and/or Facilities (PPTDF) to ensure consistency for Technology Assets, Applications, Services and/or Data (TAASD). Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Policies and standards associated with CRY domain capabilities are formally documented and centrally-managed by the entity's Governance, Risk & Compliance (GRC) team, or similar function. ▪ Standardized Operating Procedures (SOP) associated with CRY domain capabilities are well-documented and kept current by process owners. ▪ A security engineering team, or similar function, is appropriately staffed and supported to implement and maintain CRY domain capabilities. ▪ Technology is leveraged to enhance the efficiency and accuracy of cryptographic protections operations (e.g., PKI management tool). ▪ The entity's Governance, Risk & Compliance (GRC) team, or similar function, works with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with CRY domain capabilities to address Minimum Compliance Requirements (MCR) (e.g., applicable statutory, regulatory and/or contractual requirements) and Discretionary Security Requirements (DSR) (e.g., entity-required controls). ▪ An implemented and operational capability exists to facilitate cryptographic key management controls to protect the confidentiality, integrity and availability of keys.

Level 4 — Quantitatively Controlled

Cryptographic Protections (CRY) capabilities, in addition to being standardized across the entity and centrally managed to ensure consistency across Technology Assets, Applications, Services and/or Data (TAASD), efforts are metrics driven to provide sufficient insight for decision makers to predict optimal performance, ensure continued operations and/or identify areas for improvement. Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Applicable SCR-CMM Level 3 (Well Defined) capabilities are implemented and operational. ▪ Metrics reporting includes quantitative analysis of Key Performance Indicators (KPIs). ▪ Metrics reporting includes quantitative analysis of Key Risk Indicators (KRIs). ▪ Scope of metrics, KPIs and KRIs covers organization-wide cybersecurity and data protection controls, including functions performed by third-parties. ▪ Organizational leadership maintains a formal process to objectively review and respond to metrics, KPIs and KRIs (e.g., monthly or quarterly review). ▪ Based on metrics analysis, process improvement recommendations are submitted for review and are handled in accordance with change control processes. ▪ Business and technical stakeholders are involved in reviewing and approving proposed changes to evolve capabilities.

Level 5 — Continuously Improving

Utilize SCR-CMM Level 3 or Level 4 (if available) criteria definitions: ▪ There are no defined Level 5 criteria, since it is reasonable to assume a continuously-improving process is not necessary to operationalize this control. ▪ Level 5 capabilities should be considered “world-class” where the control builds on Level 4 capabilities, but are continuously improving through Artificial Intelligence (AI) and/or Machine Learning (ML) technologies. ▪ While it may be possible to develop responsive capabilities for this control through the use of AI and/or ML technologies, the criteria would be organization-specific to define.

Assessment Objectives

  1. CRY-10_A01 requirements for key generation, distribution, storage, access, and destruction are defined.
  2. CRY-10_A02 protected storage for cryptographic keys is provided using organization-defined criteria.
  3. CRY-10_A03 cryptographic keys are established in the system in accordance with organization-defined key management requirements.
  4. CRY-10_A04 cryptographic keys are managed in the system in accordance with organization-defined key management requirements.
  5. CRY-10_A05 cryptographic keys are established in the system in accordance with the following key management requirements: <A.03.13.10.ODP[01]: requirements>.
  6. CRY-10_A06 cryptographic keys are managed in the system in accordance with the following key management requirements: <A.03.13.10.ODP[01]: requirements>.

Evidence Requirements

E-CRY-02 Cryptographic Key Management

Documented evidence of cryptographic key management practices.

Cryptographic Protections

Technology Recommendations

Micro/Small

  • Cryptographic governance program

Small

  • Cryptographic governance program

Medium

  • Cryptographic governance program

Large

  • Cryptographic governance program

Enterprise

  • Cryptographic governance program

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