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NSM ICT Security Principles (Norway)
2.7.1: Establish crypto strategy in the organisation

Requirement description

Establish crypto strategy in the organisation. The strategy should include which cryptographic tools to use, how to manage certificates, how to ensure secure key generation, how to store keys/passwords, backup copying of keys, renewing of keys, and what to do if keys are compromised. Key management should distinguish between long-term keys and session keys, whereby long-term keys should be given additional protection.

How to fill the requirement

NSM ICT Security Principles (Norway)

2.7.1: Establish crypto strategy in the organisation

Task name
Priority
Status
Theme
Policy
Other requirements
Encryption key inventory and management system
Critical
High
Normal
Low
Fully done
Mostly done
Partly done
Not done
Technical cyber security
Encryption
11
requirements

Examples of other requirements this task affects

10: Cryptography
ISO 27017
10.1: Cryptographic controls
ISO 27017
10.1.2: Key management
ISO 27017
21.2.h: Encryption
NIS2
CC6.1c: Technical security for protected information assets
SOC 2
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Encryption key inventory and management system
1. Task description

The Encryption Key Management System (CKMS) handles, manages, stores, and monitors encryption keys. The management system can be implemented as an automated tool or as a more manual implementation.

The organization must have the means to monitor and report on all encryption materials and their status using an encryption key management system. The cryptographic key management system should be used at least to:

  • Track changes to cryptographic states
  • Generate and distribute cryptographic keys
  • Generate public-key certificates
  • For monitoring unidentified encrypted assets
  • For cataloging, archiving, and backing up encryption keys
  • Maintains a database of connections to an organization's certificate and encryption key structures
Compliance of used cryptographic controls in relation to applicable requirements
Critical
High
Normal
Low
Fully done
Mostly done
Partly done
Not done
Technical cyber security
Encryption
4
requirements

Examples of other requirements this task affects

18.1.5: Regulation of cryptographic controls
ISO27 Full
18.1.5: Regulation of cryptographic controls
ISO 27017
5.31: Legal, statutory, regulatory and contractual requirements
ISO27k1 Full
2.7.1: Establish crypto strategy in the organisation
NSM ICT-SP
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Compliance of used cryptographic controls in relation to applicable requirements
1. Task description

Organisation should verify that the set of cryptographic controls that apply to the use of data systems comply with relevant agreements, legislation and regulations.

Managing compromised encryption keys
Critical
High
Normal
Low
Fully done
Mostly done
Partly done
Not done
Technical cyber security
Encryption
2
requirements

Examples of other requirements this task affects

2.7.1: Establish crypto strategy in the organisation
NSM ICT-SP
See all related requirements and other information from tasks own page.
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Managing compromised encryption keys
1. Task description

The organization must have the means to handle compromised encryption keys. Endangered cryptographic keys may be in a state where they are awaiting further investigation to determine the appropriate course of action.

The handling of compromised cryptographic keys shall take into account at least the following:

  • compromised encryption keys should generally be used only for decryption and not for encryption, and in controlled environment
  • compromised keys should be included in the organization's compromised key lists
  • The immediate revocation of compromised encryption keys should be subject to the organisation's emergency revocation processes.

    Encryption key recovery
    Critical
    High
    Normal
    Low
    Fully done
    Mostly done
    Partly done
    Not done
    Technical cyber security
    Encryption
    2
    requirements

    Examples of other requirements this task affects

    2.7.1: Establish crypto strategy in the organisation
    NSM ICT-SP
    See all related requirements and other information from tasks own page.
    Go to >
    Encryption key recovery
    1. Task description

    Recovering an encryption key means rebuilding the encryption key using backups or archives.

    The organization must have the means to assess the risk of disclosure of the encryption key or encrypted data compared to compromising business continuity if the encryption key is lost.

    Activation of encryption keys
    Critical
    High
    Normal
    Low
    Fully done
    Mostly done
    Partly done
    Not done
    Technical cyber security
    Encryption
    3
    requirements

    Examples of other requirements this task affects

    2.7.1: Establish crypto strategy in the organisation
    NSM ICT-SP
    2.7.2: Activate encryption in services which offer such functionality
    NSM ICT-SP
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    Activation of encryption keys
    1. Task description

    The organization must have the means to generate encryption keys in pre-activated state when the key has been generated but not yet approved for use.

    When activating encryption keys, please note the following:

    • The encryption key can be changed from pre-activated to activated by adding the start date of the encryption period
    • Inactive encryption keys cannot be used for encryption
    • Inactivated encryption keys can only be used to prove key management or key validation
    • An encryption key in pre-activated mode should be destroyed if it is no longer needed
    Recycling encryption keys
    Critical
    High
    Normal
    Low
    Fully done
    Mostly done
    Partly done
    Not done
    Technical cyber security
    Encryption
    2
    requirements

    Examples of other requirements this task affects

    2.7.1: Establish crypto strategy in the organisation
    NSM ICT-SP
    See all related requirements and other information from tasks own page.
    Go to >
    Recycling encryption keys
    1. Task description

    The organization must ensure that encryption keys are recycled in accordance with the specified encryption cycles. The risks of disclosure and statutory requirements must be taken into account when determining the encryption period.

    When recycling encryption keys, the old key must first be used for decryption and then the new key for recryption.

    Good encryption key management practices
    Critical
    High
    Normal
    Low
    Fully done
    Mostly done
    Partly done
    Not done
    Technical cyber security
    Encryption
    13
    requirements

    Examples of other requirements this task affects

    10.1.2: Key management
    ISO27 Full
    I12: Salausratkaisut
    Katakri
    6.6.3: Tekniset vaatimukset
    Self-monitoring
    TEK-16: Tiedon salaaminen
    Julkri
    21.2.h: Encryption
    NIS2
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    Good encryption key management practices
    1. Task description

    Our organization has defined policies for creating, storing, sharing, and deleting encryption keys.

    Encryption key lengths and usage practices will be selected in accordance with best general practices by monitoring developments in the industry.

    Tasks included in the policy

    Task name
    Priority
    Status
    Theme
    Policy
    Other requirements
    No items found.

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