Where does this come from, and can I check it?

NIST chose the Rijndael design in 2000 after a public competition, and it became the federal standard in 2001. The figure is taken from NIST, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a technology fact?

Yes. It sits on the Technology shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

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AES replaced a twenty five year old cipher

NIST chose the Rijndael design in 2000 after a public competition, and it became the federal standard in 2001 The Data Encryption Standard had used a 56 bit key, which by the 1990s was within reach of dedicated machines. NIST invited open submissions, and fifteen candidates were narrowed over three years of public analysis. Rijndael, designed by Joan Daemen and Vincent Rijmen, works on 128 bit blocks with keys of 128, 192 or 256 bits. It sits in Mondo's technology collection, one of 200 facts that each trace back to the reference below.

Where this comes from

NIST

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More facts like this

A one time pad cannot be broken by analysisClaude Shannon proved in 1949 that a random key used once gives a ciphertext compatible with every possible message Two strangers agreed a secret key in publicThe 1976 Diffie-Hellman method lets both sides derive the same number without ever sending it RSA made public key encryption practicalRivest, Shamir and Adleman built a system in 1977 whose security rests on the difficulty of factoring large numbers Clocks are nudged to follow the spinning EarthSince 1972 the time signal has been stepped by a second now and then, because the planet does not keep perfect time The ISO standards body began in 1947Delegates from twenty five countries set up the organisation in Geneva to agree technical standards across borders The web's standards body started at MITTim Berners-Lee founded the World Wide Web Consortium in 1994 so no single company could own the web's formats

Tags: encryption, standards, nist

AES replaced a twenty five year old cipher: the short answers

Where does this come from, and can I check it?: NIST chose the Rijndael design in 2000 after a public competition, and it became the federal standard in 2001. The figure is taken from NIST, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a technology fact?: Yes. It sits on the Technology shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.