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- Q1022875 subject Q8910047.
- Q1022875 abstract "In cryptography, CAST-256 (or CAST6) is a symmetric-key block cipher published in June 1998. It was submitted as a candidate for the Advanced Encryption Standard (AES); however, it was not among the five AES finalists. It is an extension of an earlier cipher, CAST-128; both were designed according to the "CAST" design methodology invented by Carlisle Adams and Stafford Tavares. Howard Heys and Michael Wiener also contributed to the design. CAST-256 uses the same elements as CAST-128, including S-boxes, but is adapted for a block size of 128 bits – twice the size of its 64-bit predecessor. (A similar construction occurred in the evolution of RC5 into RC6). Acceptable key sizes are 128, 160, 192, 224 or 256 bits. CAST-256 is composed of 48 rounds, sometimes described as 12 "quad-rounds", arranged in a generalized Feistel network.In RFC 2612, the authors state that, "The CAST-256 cipher described in this document is available worldwide on a royalty-free and licence-free basis for commercial and non-commercial uses."Currently, the best public cryptanalysis of CAST-256 in the standard single secret key setting that works for all keys is the zero-correlation cryptanalysis breaking 28 rounds with 2246.9 time and 298.8 data.".
- Q1022875 wikiPageExternalLink Cipher_Reference_Home.html.
- Q1022875 wikiPageExternalLink co040410.htm.
- Q1022875 wikiPageExternalLink cs.html.
- Q1022875 wikiPageWikiLink Q1044361.
- Q1022875 wikiPageWikiLink Q1053286.
- Q1022875 wikiPageWikiLink Q1053357.
- Q1022875 wikiPageWikiLink Q1349650.
- Q1022875 wikiPageWikiLink Q1356939.
- Q1022875 wikiPageWikiLink Q1557574.
- Q1022875 wikiPageWikiLink Q190746.
- Q1022875 wikiPageWikiLink Q212971.
- Q1022875 wikiPageWikiLink Q2939134.
- Q1022875 wikiPageWikiLink Q327675.
- Q1022875 wikiPageWikiLink Q3496350.
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- Q1022875 wikiPageWikiLink Q53735.
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- Q1022875 wikiPageWikiLink Q6828100.
- Q1022875 wikiPageWikiLink Q748364.
- Q1022875 wikiPageWikiLink Q8789.
- Q1022875 wikiPageWikiLink Q8910047.
- Q1022875 comment "In cryptography, CAST-256 (or CAST6) is a symmetric-key block cipher published in June 1998. It was submitted as a candidate for the Advanced Encryption Standard (AES); however, it was not among the five AES finalists. It is an extension of an earlier cipher, CAST-128; both were designed according to the "CAST" design methodology invented by Carlisle Adams and Stafford Tavares. Howard Heys and Michael Wiener also contributed to the design.".
- Q1022875 label "CAST-256".