message authentication code (MAC)

A family of secret-key cryptographic algorithms acting on input data of arbitrary length to produce an output value of a specified length (called the MAC of the input data). The MAC can be employed to provide an authentication of the origin of data and/or data-integrity protection. In this Recommendation, approved MAC algorithms are used to determine families of pseudorandom functions (indexed by the choice of key) that are employed during key derivation.

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NIST SP 800-108r1

A cryptographic checksum on data that uses a symmetric key to detect both accidental and intentional modifications of the data. MACs provide authenticity and integrity protection but not non-repudiation protection.

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NIST SP 800-63-4

A family of symmetric-key cryptographic algorithms that act on input data of arbitrary length to produce an output value of a specified length (i.e., the MAC of the input data). The MAC can be employed to authenticate the origin of the input data and/or provide data integrity protection.

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NIST SP 800-227

A cryptographic checksum on data that uses a symmetric key to detect both accidental and intentional modifications of the data. See checksum.

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CNSSI 4009-2015

Message Authentication Code.

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NIST SP 800-108

Message Authentication Code.

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NIST SP 800-56C

A family of cryptographic algorithms that is parameterized by a symmetric key. Each of the algorithms can act on input data of arbitrary length to produce an output value of a specified length (called the MAC of the input data). A MAC algorithm can be used to provide data origin authentication and data integrity.

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NIST SP 800-108

a data authenticator generated from the message, usually through cryptographic techniques. In general, a cryptographic key is also required as an input.

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NIST SP 800-15

A cryptographic checksum on data that uses a symmetric key to detect both accidental and intentional modifications of data.

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NIST SP 800-152

A cryptographic checksum on data that uses a symmetric key to detect both accidental and intentional modifications of data.

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NIST SP 800-57 Part 1 Rev. 3

A bit string of fixed length, computed by a MAC generation algorithm, that is used to establish the authenticity and, hence, the integrity of a message.

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NIST SP 800-38B

A cryptographic checksum on data that is designed to reveal both accidental errors and intentional modifications of the data.

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NIST SP 800-38C

A cryptographic checksum on data that uses an approved security function and a symmetric key to detect both accidental and intentional modifications of data.

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NIST SP 800-57 Part 1 Rev. 4

A cryptographic checksum on data that uses an approved security function and a symmetric key to detect both accidental and intentional modifications of data.

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NIST SP 800-57 Part 1 Rev. 5

A cryptographic checksum on data that uses an approved security function and a symmetric key to detect both accidental and intentional modifications of data.

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NIST SP 800-175B Rev. 1

A cryptographic checksum on data that uses an approved security function and a symmetric key to detect both accidental and intentional modifications of data.

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NIST SP 800-133 Rev. 2

A cryptographic checksum on data that uses a symmetric key to detect both accidental and intentional modifications of the data. MACs provide authenticity and integrity protection, but not non-repudiation protection.

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NIST SP 800-63-3

A cryptographic checksum on data that uses a symmetric key to detect both accidental and intentional modifications of the data. MACs provide authenticity and integrity protection, but not non-repudiation protection.

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NIST SP 800-63-2

A cryptographic checksum based on an approved cryptographic function and a symmetric key to detect both accidental and intentional modifications of data.

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NIST SP 800-57 Part 2 Rev.1

A family of cryptographic algorithms that is parameterized by a symmetric key. Each of the algorithms can act on input data (called a message) of an arbitrary length to produce an output value of a specified length (called the MAC of the input data). A MAC algorithm can be used to provide data origin authentication and data integrity protection. In this Recommendation, a MAC algorithm is also called a MAC function.

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NIST SP 800-56C

A cryptographic checksum on data that uses a symmetric key to detect both accidental and intentional modifications of the data.

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NISTIR 7711

A cryptographic checksum on data that uses a symmetric key to detect both accidental and intentional modifications of the data.

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FIPS 201