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- Hierocrypt abstract "In cryptography, Hierocrypt-L1 and Hierocrypt-3 are block ciphers created byToshiba in 2000. They were submitted to the NESSIE project, but were not selected. Bothalgorithms were among the cryptographic techniques recommended for Japanese government use by CRYPTREC in 2003, however, both have been dropped to "candidate" by CRYPTREC revision in 2013.The Hierocrypt ciphers are very similar, differing mainly in block size: 64 bits for Hierocrypt-L1, 128 bits for Hierocrypt-3. Hierocrypt-L1's key size is 128 bits, while Hierocrypt-3 can use keys of 128, 192, or 256 bits. The number of rounds of encryption also varies: Hierocrypt-L1 uses 6.5 rounds, and Hierocrypt-3 uses 6.5, 7.5, or 8.5, depending on the key size.The Hierocrypt ciphers use a nested substitution-permutation network (SPN) structure. Each round consists of parallel applications of a transformation called the XS-box, followed by a linear diffusion operation. The final half-round replaces the diffusion with a simplepost-whitening. The XS-box, which is shared by the two algorithms, is itself an SPN, consisting of a subkey XOR, an S-box lookup, a linear diffusion, another subkey XOR, and another S-box lookup. The diffusion operations use two MDS matrices, and there is a single 8×8-bit S-box. The key schedule uses the binary expansions of the square roots of some small integers as a source of "nothing up my sleeve numbers".No analysis of the full ciphers has been announced, but certain weaknesses were discovered in the Hierocrypt key schedule, linear relationships between the master key and some subkeys. There has also been some success applying integral cryptanalysis to reduced-round Hierocrypt variants; attacks faster than exhaustive search have been found for 3.5 rounds of each cipher.".
- Hierocrypt wikiPageExternalLink barreto01improved.html.
- Hierocrypt wikiPageExternalLink Cipher_Reference_Home.html.
- Hierocrypt wikiPageExternalLink D13.pdf.
- Hierocrypt wikiPageID "8439595".
- Hierocrypt wikiPageLength "3860".
- Hierocrypt wikiPageOutDegree "37".
- Hierocrypt wikiPageRevisionID "583612028".
- Hierocrypt wikiPageWikiLink Bart_Preneel.
- Hierocrypt wikiPageWikiLink Block_cipher.
- Hierocrypt wikiPageWikiLink Block_size_(cryptography).
- Hierocrypt wikiPageWikiLink CRYPTREC.
- Hierocrypt wikiPageWikiLink Category:Block_ciphers.
- Hierocrypt wikiPageWikiLink Confusion_and_diffusion.
- Hierocrypt wikiPageWikiLink Cryptanalysis.
- Hierocrypt wikiPageWikiLink Cryptography.
- Hierocrypt wikiPageWikiLink Diffusion_(cryptography).
- Hierocrypt wikiPageWikiLink Exclusive_or.
- Hierocrypt wikiPageWikiLink Fast_Software_Encryption.
- Hierocrypt wikiPageWikiLink Hae_Yong_Kim.
- Hierocrypt wikiPageWikiLink Integral_attack.
- Hierocrypt wikiPageWikiLink Integral_cryptanalysis.
- Hierocrypt wikiPageWikiLink Joos_Vandewalle.
- Hierocrypt wikiPageWikiLink Jorge_Nakahara,_Jr..
- Hierocrypt wikiPageWikiLink Key_schedule.
- Hierocrypt wikiPageWikiLink Key_size.
- Hierocrypt wikiPageWikiLink Key_whitening.
- Hierocrypt wikiPageWikiLink MDS_matrix.
- Hierocrypt wikiPageWikiLink NESSIE.
- Hierocrypt wikiPageWikiLink Nothing_up_my_sleeve_number.
- Hierocrypt wikiPageWikiLink PDF.
- Hierocrypt wikiPageWikiLink Paulo_S._L._M._Barreto.
- Hierocrypt wikiPageWikiLink Portable_Document_Format.
- Hierocrypt wikiPageWikiLink PostScript.
- Hierocrypt wikiPageWikiLink S-box.
- Hierocrypt wikiPageWikiLink Springer-Verlag.
- Hierocrypt wikiPageWikiLink Springer_Science+Business_Media.
- Hierocrypt wikiPageWikiLink Substitution-permutation_network.
- Hierocrypt wikiPageWikiLink Substitution_box.
- Hierocrypt wikiPageWikiLink Toshiba.
- Hierocrypt wikiPageWikiLink Vincent_Rijmen.
- Hierocrypt wikiPageWikiLink XOR.
- Hierocrypt wikiPageWikiLink Yokohama.
- Hierocrypt wikiPageWikiLinkText "Hierocrypt".
- Hierocrypt wikiPageWikiLinkText "Hierocrypt-3".
- Hierocrypt wikiPageWikiLinkText "Hierocrypt-L1".
- Hierocrypt blockSize "128".
- Hierocrypt blockSize "64".
- Hierocrypt certification CRYPTREC.
- Hierocrypt cryptanalysis "Integral attack against 3.5 rounds".
- Hierocrypt designers Toshiba.
- Hierocrypt hasPhotoCollection Hierocrypt.
- Hierocrypt keySize "128".
- Hierocrypt keySize "128192".
- Hierocrypt name "Hierocrypt-3".
- Hierocrypt name "Hierocrypt-L1".
- Hierocrypt publishDate "2000".
- Hierocrypt relatedTo "Hierocrypt-3".
- Hierocrypt relatedTo "Hierocrypt-L1".
- Hierocrypt rounds "6.5".
- Hierocrypt structure "Nested SPN".
- Hierocrypt wikiPageUsesTemplate Template:Cite_conference.
- Hierocrypt wikiPageUsesTemplate Template:Crypto-stub.
- Hierocrypt wikiPageUsesTemplate Template:Cryptography_navbox.
- Hierocrypt wikiPageUsesTemplate Template:Infobox_block_cipher.
- Hierocrypt subject Category:Block_ciphers.
- Hierocrypt comment "In cryptography, Hierocrypt-L1 and Hierocrypt-3 are block ciphers created byToshiba in 2000. They were submitted to the NESSIE project, but were not selected. Bothalgorithms were among the cryptographic techniques recommended for Japanese government use by CRYPTREC in 2003, however, both have been dropped to "candidate" by CRYPTREC revision in 2013.The Hierocrypt ciphers are very similar, differing mainly in block size: 64 bits for Hierocrypt-L1, 128 bits for Hierocrypt-3.".
- Hierocrypt label "Hierocrypt".
- Hierocrypt sameAs m.0273gyl.
- Hierocrypt sameAs Hierocrypt-3.
- Hierocrypt sameAs Hierocrypt-3.
- Hierocrypt sameAs Q4040651.
- Hierocrypt sameAs Q4040651.
- Hierocrypt wasDerivedFrom Hierocrypt?oldid=583612028.
- Hierocrypt isPrimaryTopicOf Hierocrypt.