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non-repudiation

Definitions:

  A service that is used to provide assurance of the integrity and origin of data in such a way that the integrity and origin can be verified and validated by a third party as having originated from a specific entity in possession of the private key (i.e., the signatory).
Sources:
FIPS 186-5 under Non-repudiation

  Assurance that the sender of information is provided with proof of delivery and the recipient is provided with proof of the sender’s identity, so neither can later deny having processed the information.
Sources:
NIST SP 800-18 Rev. 1 under Non-repudiation from CNSSI 4009
NIST SP 800-60 Vol. 1 Rev. 1 under Non-repudiation from CNSSI 4009 - Adapted
NIST SP 800-60 Vol. 2 Rev. 1 under Non-repudiation from CNSSI 4009 - Adapted

  Assurance the sender of data is provided with proof of delivery and the recipient is provided with proof of the sender’s identity, so neither can later deny having processed the data.
Sources:
NIST SP 800-59 under Non-repudiation from CNSSI 4009

  Protection against an individual falsely denying having performed a particular action. Provides the capability to determine whether a given individual took a particular action such as creating information, sending a message, approving information, and receiving a message.
Sources:
CNSSI 4009-2015

  A service using a digital signature that is used to support a determination of whether a message was actually signed by a given entity.
Sources:
NIST SP 800-175B Rev. 1 under Non-repudiation
NIST SP 800-57 Part 2 Rev.1 under Non-repudiation

  In a general information security context, assurance that the sender of information is provided with proof of delivery, and the recipient is provided with proof of the sender's identity, so neither can later deny having process the information .
Sources:
NIST SP 800-57 Part 2 Rev.1 under Non-repudiation

  A service using a digital signature that is used to support a determination by a third party of whether a message was actually signed by a given entity.
Sources:
NIST SP 800-57 Part 1 Rev. 5 under Non-repudiation

  Protection against an individual who falsely denies having performed a certain action and provides the capability to determine whether an individual took a certain action, such as creating information, sending a message, approving information, or receiving a message.
Sources:
NIST SP 800-53 Rev. 5

  The inability to deny responsibility for performing a specific act.
Sources:
NISTIR 4734 under Non-repudiation