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Rationale: The concept of an integrity check value is included in the term "checksum." As such, it is not necessary to distinguish between the two terms.
CNSSI 4009-2015 under integrity check value
A fixed string that is prepended to the plaintext within the authenticated-encryption function of a key-wrap algorithm, in order to enable the verification of the integrity of the plaintext within the authenticated-decryption function.
NIST SP 800-38F