Advanced Encryption Standard: Difference between revisions

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AES was announced by [[National Institute of Standards and Technology]] (NIST) as U.S. [[Federal Information Processing Standard|FIPS]] PUB 197 (FIPS 197) on November 26, 2001 after a 5-year standardization process in which fifteen competing designs were presented and evaluated before Rijndael was selected as the most suitable (see [[Advanced Encryption Standard process]] for more details). It became effective as a Federal government standard on May 26, 2002 after approval by the Secretary of Commerce. It is available in many different encryption packages. AES is the first publicly accessible and open [[cipher]] approved by the [[National Security Agency|NSA]] for [[top secret]] information (see [[Advanced Encryption Standard#Security|Security of AES]], below).

The Rijndael [[cipher]] was developed by two [[Belgium|Belgian]] cryptographers, [[Joan Daemen]] and [[Vincent Rijmen]], and submitted by them to the AES selection process. Rijndael (pronounced {{IPA-nl|rɛindaːl|}}) is a playwordplay on the names of the two inventors.<ref>{{Cite news |title=U.S. Selects a New Encryption Technique |author=John Schwartz |newspaper=New York Times |date=October 3, 2000 |url=http://www.nytimes.com/2000/10/03/business/technology-us-selects-a-new-encryption-technique.html }}</ref><ref>{{cite web |url=http://rijndael.info/audio/rijndael_pronunciation.wav |title='Rijndael' pronunciation}}</ref>

== Description of the cipher ==