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3.2 Data Integrity

NIST platform security: roots of trust, firmware and secure enclaves SP 800-57 Part 1 Rev. 4
All changes in this version
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Title

Data Integrity

Control

Data integrity is a property whereby data has not been modified in an unauthorized manner since it was created, transmitted or stored. Modification includes the insertion, deletion and substitution of data. Cryptographic mechanisms, such as message authentication codes or digital signatures, can be used to detect (with a high probability) both accidental modifications (e.g., modifications that sometimes occur during noisy transmissions or by hardware memory failures) and deliberate modifications by an adversary. Non-cryptographic mechanisms are also often used to detect accidental modifications, but cannot be relied upon to detect deliberate modifications. A more detailed treatment of this subject is provided in Appendix A . In this Recommendation, the statement that a cryptographic algorithm "provides data integrity" means that the algorithm is used to detect unauthorized modifications. Authenticating integrity is discussed in the next section.