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Definitions and Terminology

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MAC

Message Authentication Code, String of bits which is the output of a MAC algorithm [ISO/IEC 9797-1]

source: ISO9798-6, 2005

Message Authentication Code, the string of bits which is the output of a MAC algorithm. NOTE — A MAC is sometimes called a cryptographic check value (see for example ISO 7498-2).

source: ISO9797-2, 2002

Message Authentication Code - The string of bits which is the output of a MAC algorithm. NOTE – A MAC is sometimes called a cryptographic check value (see for example ISO 7498-2).

source: ISO13888-1, 2004

Acronym for “message authentication code.” In cryptography, it is a small piece of information used to authenticate a message. See Strong Cryptography.

source: PCI DSS, 2008

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