Introduction A new competition, CAESAR, is now calling for submissions of authenticated ciphers. This competition follows a long tradition of focused competitions in secret-key cryptography: In 1997 the United States National Institute of Standards and Technology (NIST) announced an open competition for a new Advanced Encryption Standard. This competition attracted 15 block-cipher submissions from 50 cryptographers around the world, and then public security evaluations from an even larger pool of cryptanalysts, along with performance evaluations. Eventually NIST chose Rijndael as AES.

In 2004 ECRYPT, a Network of Excellence funded by the European Union, announced eSTREAM, the ECRYPT Stream Cipher Project. This project called for submissions of "new stream ciphers suitable for widespread adoption". This call attracted 34 stream-cipher submissions from 100 cryptographers around the world, and then hundreds of security evaluations and performance evaluations, following the same pattern as AES but on a larger scale. Eventually the eSTREAM committee selected a portfolio containing several stream ciphers.

In 2007 NIST announced an open competition for a new hash standard, SHA-3. This competition attracted 64 hash-function submissions from 200 cryptographers around the world, and then a tremendous volume of security evaluations and performance evaluations. Eventually NIST chose Keccak as SHA-3. The AES competition is generally viewed as having provided a tremendous boost to the cryptographic research community's understanding of block ciphers, and a tremendous increase in confidence in the security of some block ciphers. Similar comments apply to eSTREAM and to the SHA-3 competition, and are also expected to apply to CAESAR. Mailing list Send email to crypto-competitions+subscribe@googlegroups.com to join the crypto-competitions mailing list. Contributions This web site is maintained by D. J. Bernstein. Part of the work documented here is supported by NIST grant 60NANB12D261, "Cryptographic competitions", 2013.01.01–2017.12.31. Version: This is version 2014.01.27 of the index.html web page.