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8 Key-Management Phases and Functions

NIST platform security: roots of trust, firmware and secure enclaves SP 800-57 Part 1 Rev. 4
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first version loaded 8 Key-Management Phases and Functions

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Key-Management Phases and Functions

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The cryptographic key-management lifecycle can be divided into four phases. During each phase, the keys are in certain specific key states as discussed in Section 7 . In addition, within each phase, certain key-management functions are typically performed. These functions are necessary for the management of the keys and their associated metadata. Key-management information is called metadata. The metadata required for key management might include the identity of a person or system associated with that key or the types of information that person is authorized to access. Metadata is used by applications to select the appropriate cryptographic key(s) for a particular service. While the metadata does not appear in cryptographic algorithms, it is crucial to the implementation of applications and application protocols. The four phases of key management are: