An individual (person), organization, device or process. Used interchangeably with “party.”
Sources:
FIPS 186-5 under Entity

  An individual (person), organization, device, or process. Used interchangeably with “entity.”
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FIPS 186-5 under Party

  An individual person, organization, device, or process. In this specifica­tion, there are two parties (e.g., Party A and Party B, or Alice and Bob) who jointly perform the key establishment process using a KEM.
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FIPS 203

  An individual person, organization, device, or process. Used interchangeably with party.
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FIPS 204 under entity

  An individual person, organization, device, or process. Used interchangeably with “entity.”
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FIPS 204

  An individual (person), organization, device, or process. Used interchangeably with party.
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FIPS 205 under entity

  An individual (person), organization, device, or process. Used interchangeably with “entity.”
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FIPS 205 from FIPS 186-5

  Organization entering into an agreement.
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NIST SP 800-160v1r1 from ISO/IEC/IEEE 15288:2015

  An individual (person), organization, device or process. Used interchangeably with “party”.
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NIST SP 800-102 under Entity
NIST SP 800-89 under Entity

  An individual (person), organization, device or process. Used interchangeably with “entity”.
Sources:
NIST SP 800-102 under Party
NIST SP 800-89 under Party

  An individual (person), organization, device, or process.
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NIST SP 800-175B Rev. 1 under Entity

  An individual (person), organization, device, or process. “Party” is a synonym.
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NIST SP 800-56B Rev. 2 under Entity

  An individual (person), organization, device or process.
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NIST SP 800-57 Part 1 Rev. 5 under Entity

  A human (person/individual/user), organization, device or process.
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NIST SP 800-57 Part 2 Rev.1 under Entity

  See Entity.
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NIST SP 800-133 Rev. 2 under Party
NIST SP 800-152 under Party
NIST SP 800-56B Rev. 2 under Party
NIST SP 800-57 Part 2 Rev.1 under Party

  A person, device, service, network, domain, manufacturer, or other party who might interact with an IoT device.
Sources:
NIST SP 800-213 under Entity
NISTIR 8259A under Entity
NISTIR 8259B under Entity

  An individual (person), organization, device, or process; used interchangeably with “party.”
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NIST SP 800-133 Rev. 2 under Entity

  An individual (person), organization, device, or a combination thereof. In this Recommendation, an entity may be a functional unit that executes certain processes.
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NIST SP 800-108r1 [August 2022 (Includes updates as of 02-02-2024)] under entity

  An item inside or outside an information and communication technology system, such as a person, an organization, a device, a subsystem, or a group of such items that has recognizably distinct existence.
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NIST SP 800-188 under entity from ISO/IEC 24760-1:2011

  An individual (person), organization, device or process.
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NIST SP 800-175A under entity

  item inside or outside an information and communication technology system, such as a person, an organization, a device, a subsystem, or a group of such items that has recognizably distinct existence
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NISTIR 8053 under entity from ISO/IEC 24760-1:2011

  An individual, group or an organization participating in an action.
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NISTIR 4734 under Party