Data Authentication Algorithm: Difference between revisions

Revision as of 20:37, 3 February 2007

Revision as of 21:04, 3 February 2007

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The '''Data Authentication Algorithm''' ('''DAA''') is a former [[Federal Information Processing Standard|U.S. government standard]] for producing cryptographic [[message authentication code|message authentication codes]]. According to the standard, a code produced by the DAA is called a '''Data Authentication Code''' ('''DAC'''). The algorithm is not considered secure by today's standards.

A '''Data Authentication Code''' is a [[message authentication code]] that has been computed with the [[Data Authentication Algorithm]], a U.S. government standard.

The DAA is equivalent to [[CBC-MAC]], with [[Data Encryption Standard|DES]] as the underlying cipher, truncated to between 24 and 56 bits (inclusive).

==Sources==

* [http://www.itl.nist.gov/fipspubs/fip113.htm FIPS PUB 113 - Computer Data Authentication] - the [[Federal Information Processing Standard]] publication that defines how to compute the Data Authentication CodeAlgorithm