Standards
Various standards exist that define MAC algorithms. These include:
- FIPS PUB 113 Computer Data Authentication, withdrawn in 2002, defines an algorithm based on DES.
- ISO/IEC 9797-1 Mechanisms using a block cipher
- ISO/IEC 9797-2 Mechanisms using a dedicated hash-function
ISO/IEC 9797-1 and -2 define generic models and algorithms that can be used with any block cipher or hash function, and a variety of different parameters. These models and parameters allow more specific algorithms to be defined by nominating the parameters. For example the FIPS PUB 113 algorithm is functionally equivalent to ISO/IEC 9797-1 MAC algorithm 1 with padding method 1 and a block cipher algorithm of DES.
Read more about this topic: Message Authentication Code
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