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About: Q (cipher)     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Message106253690, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: yago:WikicatBrokenBlockCiphersnobleyago:Abstraction100002137yago:Cipher106254239yago:Communication100033020yago:Message106253690 New Facet based on Instances of this Class

In cryptography, Q is a block cipher invented by Leslie McBride. It was submitted to the NESSIE project, but was not selected. The algorithm uses a key size of 128, 192, or 256 bits. It operates on blocks of 128 bits using a substitution–permutation network structure. There are 8 rounds for a 128-bit key and 9 rounds for a longer key. Q uses S-boxes adapted from Rijndael (also known as AES) and Serpent. It combines the nonlinear operations from these ciphers, but leaves out all the linear transformations except the permutation. Q also uses a constant derived from the golden ratio as a source of "nothing up my sleeve numbers".