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Key Management Policy

1. Purpose

The purpose of this Key Management Policy is to establish requirements and procedures for the secure generation, distribution, storage, use, rotation, backup, recovery, archival, and destruction of cryptographic keys used to protect organizational information assets.

Effective key management is essential to maintaining the confidentiality, integrity, authenticity, and availability of data protected through encryption technologies. Improper handling of cryptographic keys can undermine the security of otherwise strong encryption systems.

This policy provides a framework for managing cryptographic keys throughout their lifecycle and supports compliance with applicable legal, regulatory, contractual, and industry requirements.

2. Scope

This policy applies to:

  • All employees
  • Contractors
  • Consultants
  • Temporary personnel
  • Third-party service providers with access to organizational systems

This policy applies to all cryptographic keys used by the organization, including keys used for:

  • Data encryption
  • Data decryption
  • Digital signatures
  • Authentication
  • Secure communications
  • Certificate management
  • Application security
  • Cloud services
  • Database security
  • Backup protection

The policy applies to all organizational systems, including:

  • Servers
  • Workstations
  • Mobile devices
  • Databases
  • Cloud platforms
  • SaaS applications
  • Network devices
  • Security appliances
  • Backup systems

3. Policy Statement

All cryptographic keys shall be managed throughout their lifecycle using secure, documented, and auditable processes.

Cryptographic keys shall be protected from unauthorized access, disclosure, modification, destruction, and loss.

Only approved key management solutions, technologies, and procedures may be used to generate, store, distribute, and manage cryptographic keys.

4. Objectives

The objectives of this policy are to:

  • Protect cryptographic keys from unauthorized access.
  • Ensure the effectiveness of encryption technologies.
  • Reduce the risk of data compromise.
  • Establish standardized key management practices.
  • Support regulatory and contractual compliance.
  • Ensure secure key recovery and continuity of operations.
  • Define responsibilities for key management activities.
  • Maintain accountability through logging and auditing.

5. Definitions

Cryptographic Key

A value used by a cryptographic algorithm to encrypt, decrypt, sign, verify, authenticate, or otherwise secure information.

Key Management

The process of managing cryptographic keys throughout their lifecycle.

Key Custodian

An individual or role responsible for safeguarding cryptographic keys.

Hardware Security Module (HSM)

A dedicated hardware device designed to securely generate, store, and manage cryptographic keys.

Key Rotation

The replacement of an existing cryptographic key with a new key.

Key Revocation

The invalidation of a cryptographic key before its scheduled expiration.

Key Escrow

The secure storage of backup copies of cryptographic keys for recovery purposes.

6. Key Management Principles

The organization shall implement the following key management principles:

  • Least privilege access
  • Separation of duties
  • Defense in depth
  • Secure key lifecycle management
  • Strong authentication
  • Comprehensive audit logging
  • Secure backup and recovery
  • Continuous monitoring

Cryptographic keys shall be treated as highly sensitive assets.

7. Key Lifecycle Management

The organization shall manage cryptographic keys throughout the following lifecycle phases:

  • Key Generation
  • Key Distribution
  • Key Storage
  • Key Usage
  • Key Rotation
  • Key Backup
  • Key Recovery
  • Key Archival
  • Key Revocation
  • Key Destruction

Each phase shall be documented and managed using approved procedures.

8. Key Generation Requirements

Cryptographic keys shall be generated using approved cryptographic algorithms and trusted sources of randomness.

Key generation must:

  • Utilize approved cryptographic libraries
  • Use secure random number generators
  • Follow vendor-recommended security practices
  • Meet organizational cryptographic standards

Generated keys shall be unique and protected immediately upon creation.

Whenever possible, key generation shall occur within:

  • Hardware Security Modules (HSMs)
  • Cloud Key Management Systems
  • Approved key vault solutions

9. Approved Cryptographic Standards

The organization shall use industry-recognized cryptographic standards.

Approved algorithms include:

Symmetric Encryption

  • AES-128
  • AES-192
  • AES-256

Preferred standard: AES-256

Asymmetric Encryption

  • RSA 2048-bit minimum
  • RSA 3072-bit preferred
  • Elliptic Curve Cryptography (ECC)

Hashing

Approved:

  • SHA-256
  • SHA-384
  • SHA-512

Prohibited unless specifically approved:

  • MD5
  • SHA-1

Transport Encryption

Approved:

  • TLS 1.2
  • TLS 1.3

Preferred:

  • TLS 1.3

10. Key Distribution

Cryptographic keys shall only be distributed through secure and approved methods.

Key distribution processes shall:

  • Protect keys from interception
  • Verify recipient identity
  • Maintain confidentiality
  • Maintain integrity

Keys shall never be transmitted through:

  • Unencrypted email
  • Instant messaging systems
  • Shared documents
  • Public file-sharing platforms

11. Key Storage Requirements

Cryptographic keys shall be stored in secure environments designed to prevent unauthorized access.

Approved storage methods include:

  • Hardware Security Modules (HSMs)
  • Cloud Key Management Services
  • Enterprise secrets management platforms
  • Encrypted key vaults

Keys shall not be stored:

  • In source code
  • In application configuration files
  • In spreadsheets
  • In plain text documents
  • In unsecured databases

Encryption keys shall be stored separately from encrypted data whenever practical.

12. Access Control Requirements

Access to cryptographic keys shall be restricted to authorized personnel with a legitimate business need.

Access controls shall include:

  • Role-based access control
  • Least privilege permissions
  • Multi-factor authentication
  • Audit logging
  • Periodic access reviews

Privileged access shall be reviewed at least annually.

13. Key Custodian Responsibilities

Designated key custodians shall:

  • Protect assigned keys
  • Follow documented procedures
  • Report suspected compromises
  • Participate in periodic reviews
  • Support recovery processes
  • Maintain required documentation

Key custodians shall receive appropriate security training.

14. Key Rotation Requirements

Cryptographic keys shall be rotated periodically to reduce the risk associated with long-term key exposure.

Key rotation shall occur:

  • At least annually
  • Upon suspected compromise
  • Following major security incidents
  • Following personnel changes affecting key access
  • Following vendor transitions where appropriate
  • As required by regulatory obligations

Rotation schedules shall be documented and maintained.

15. Key Backup Requirements

Critical cryptographic keys shall be backed up to support business continuity and disaster recovery.

Key backups shall:

  • Be encrypted
  • Be access-controlled
  • Be stored securely
  • Be tested periodically

Backup copies shall be protected with security controls equivalent to those used for production keys.

16. Key Recovery Procedures

Documented procedures shall exist for recovering cryptographic keys in the event of:

  • System failures
  • Data corruption
  • Hardware failures
  • Personnel departures
  • Disaster recovery events

Recovery procedures shall be periodically tested.

17. Key Escrow

Where business requirements necessitate key escrow, escrowed keys shall be:

  • Securely encrypted
  • Access-controlled
  • Audited
  • Periodically reviewed

Access to escrowed keys shall require management authorization.

18. Key Revocation

Keys shall be revoked immediately when:

  • Compromise is suspected
  • Unauthorized disclosure occurs
  • Personnel access is terminated
  • Certificates are invalidated
  • Security incidents require replacement

Revocation actions shall be documented and logged.

19. Key Destruction

Cryptographic keys that are no longer required shall be securely destroyed.

Destruction methods shall prevent reconstruction or recovery of the key material.

Destruction activities shall be documented and, where appropriate, witnessed by authorized personnel.

20. Logging and Monitoring

The organization shall maintain audit logs for key management activities, including:

  • Key creation
  • Key distribution
  • Key access
  • Key rotation
  • Key revocation
  • Key destruction
  • Administrative actions

Logs shall be protected from unauthorized modification and retained according to organizational retention requirements.

21. Third-Party Key Management

Third parties managing organizational cryptographic keys must:

  • Implement security controls equivalent to organizational requirements
  • Provide evidence of compliance upon request
  • Notify the organization of key-related incidents
  • Maintain documented key management procedures

Contracts shall define key management responsibilities.

22. Incident Response

Any suspected or confirmed compromise involving cryptographic keys shall be treated as a security incident.

The organization shall:

  • Investigate the incident
  • Assess potential impact
  • Revoke affected keys
  • Generate replacement keys
  • Re-encrypt affected data where necessary
  • Document remediation activities

Key compromise incidents shall be reported immediately to the Information Security team.

23. Compliance and Auditing

Compliance with this policy shall be verified through:

  • Internal audits
  • Security assessments
  • Compliance reviews
  • Vulnerability assessments
  • Management reviews

Non-compliance shall be addressed through corrective actions.

24. Exceptions

Exceptions to this policy must:

  • Be documented
  • Include business justification
  • Include risk assessment
  • Be approved by management
  • Include a defined review period

Temporary exceptions shall have an expiration date.

25. Enforcement

Violations of this policy may result in:

  • Suspension of system access
  • Disciplinary action
  • Contract termination
  • Legal action where appropriate

26. Review and Maintenance

This policy shall be reviewed:

  • At least annually
  • Following significant technology changes
  • Following regulatory changes
  • Following major security incidents

Updates shall be approved by executive management.

27. Related Policies

  • Information Security Policy
  • Data Encryption Policy
  • Access Control Policy
  • Password Policy
  • Incident Response Policy
  • Vendor Management Policy
  • Backup and Recovery Policy
  • Risk Management Policy

28. Policy Approval

Policy Owner: Information Security Manager

Approved By: Executive Management

Effective Date: __________________

Review Date: __________________

Version: 1.0