Data Authentication Algorithm
The Data Authentication Algorithm (DAA) is a former U.S. government standard for producing cryptographic message authentication codes. DAA is defined in FIPS PUB 113,[1] which was withdrawn on September 1, 2008. The algorithm is not considered secure by today's standards.
According to the standard, a code produced by the DAA is called a Data Authentication Code (DAC). The algorithm chain encrypts the data, with the last cipher block truncated and used as the DAC.
The DAA is equivalent to ISO/IEC 9797-1 MAC algorithm 1, or CBC-MAC, with DES as the underlying cipher, truncated to between 24 and 56 bits (inclusive).
Sources
- FIPS PUB 113 - Computer Data Authentication - the Federal Information Processing Standard publication that defines the Data Authentication Algorithm
| |||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||
gollark: https://pastebin.com/p2LM8zNu
gollark: It was designed for minecarts but should apply broadly.
gollark: If you're doing flying pigs, you may be interested in my station-keeping code, which was slightly stolen from Sascha_T then edited lots.
gollark: I believe the HTML5 spec has some char-by-char HTML parsing algorithm to deal with the bad HTML pages out there.
gollark: Parser combinators are cool and good.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.