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A physical or cryptographic means of providing assurance that information has not been altered in an unauthorized manner since it was created, transmitted, or stored.
NIST SP 800-152 under Integrity protection
The process of providing assurance that data has not been modified since a message authentication code or digital signature was created for that data.
NIST SP 800-57 Part 2 Rev.1
The process of determining the integrity of the data; also called data integrity authentication.
NIST SP 800-175B Rev. 1 under Integrity authentication (integrity verification)
The process of obtaining assurance that data has not been modified since an authentication code or digital signature was created for that data.
NIST SP 800-57 Part 1 Rev. 5
The protection obtained for transmitted or stored data using an authentication code (e.g., MAC) or digital signature computed on that data. See Integrity authentication.
NIST SP 800-57 Part 1 Rev. 5 under Integrity protection