Вы можете отметить интересные вам фрагменты текста, которые будут доступны по уникальной ссылке в адресной строке браузера.


SHARK

Translation
SHARK

Infobox block cipher
name = SHARK
designers = Vincent Rijmen, Joan Daemen, Bart Preneel, Antoon Bosselaers, Erik De Win
publish date = 1996
derived from =
derived to = KHAZAD, Rijndael
related to =
key size = 128 bits
block size = 64 bits
structure = Substitution-permutation network
rounds = 6
cryptanalysis =

In cryptography, SHARK is a block cipher identified as one of the predecessors of Rijndael (the Advanced Encryption Standard).

SHARK has a 64-bit block size and a 128-bit key size. It is a six round SP-network which alternates a key mixing stage with linear and non-linear transformation layers. The linear transformation uses an MDS matrix representing a Reed-Solomon error correcting code in order to guarantee good diffusion. The nonlinear layer is composed of eight 8×8-bit S-boxes based on the function "F(x) = x-1" over "GF(28)".

Five rounds of a modified version of SHARK can be broken using an interpolation attack (Jakobsen and Knudsen, 1997).

ee also

* KHAZAD
* Square

References

* cite conference
author = Vincent Rijmen, Joan Daemen, Bart Preneel, Anton Bosselaers, Erik De Win
title = The Cipher SHARK
booktitle = 3rd International Workshop on Fast Software Encryption (FSE '96)
pages = pp.99–111
publisher = Springer-Verlag
date = February 1996
location = Cambridge
url = http://citeseer.ist.psu.edu/rijmen96cipher.html
format = PDF/PostScript
accessdate = 2007-03-06
* cite conference
author = T. Jakobsen, L.R. Knudsen
title = The Interpolation Attack on Block Ciphers
booktitle = 4th International Workshop on Fast Software Encryption (FSE '97)
pages = pp.28–40
publisher = Springer-Verlag
date = January 1997
location = Haifa
url = http://citeseer.ist.psu.edu/jakobsen97interpolation.html
format = PDF/PostScript
accessdate = 2007-01-23
* cite book
author = Joan Daemen, Vincent Rijmen
title = The Design of Rijndael: AES—The Advanced Encryption Standard
publisher = Springer-Verlag
date = 2002
id = ISBN 3-540-42580-2

External links

* [http://www.users.zetnet.co.uk/hopwood/crypto/scan/cs.html#SHARK-A SCAN's entry for SHARK]


Wikimedia Foundation. 2010.

Synonyms:

  
Share  

Look at other dictionaries:

  • Shark — Shark, n. [Of uncertain origin; perhaps through OF. fr. carcharus a kind of dogfish, Gr. karchari as, so called from its sharp teeth, fr. ka rcharos having sharp or jagged teeth; or perhaps named from its rapacity (cf. {Shark}, v. t. & i.); cf.… …   The Collaborative International Dictionary of English

  • Shark — (engl. für „Hai“) steht für: Personen: Rolf Shark (eigentlich: Karl Hans Koizar; 1922–2005), österreichischer Schriftsteller, Autor der Bob Barring Serie Gegenstände / Dienstleistungen: Shark 3D, eine Middleware für Computerspiele, Videospiele… …   Deutsch Wikipedia

  • SHARK — Создатель: Винсент Рэймен Создан: 1996 г. Опубликован: 1996 г. Размер ключа: 128 бит Размер блока: 64 бит Число раундов: 6 Тип: Подстаново …   Википедия

  • Shark — (homonymie) Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Shark peut faire référence à : Shark, un fabricant de casques de moto Shark, une série télévisée américaine SHARK peut faire référence… …   Wikipédia en Français

  • Shark — Shark, v. t. [Of uncertain origin; perhaps fr. shark, n., or perhaps related to E. shear (as hearken to hear), and originally meaning, to clip off. Cf. {Shirk}.] To pick or gather indiscriminately or covertly. [Obs.] Shak. [1913 Webster] …   The Collaborative International Dictionary of English

  • shark — 1> акула 2> хищник Ex: financial sharks биржевые акулы 3> шулер; мошенник; вымогатель 4> спекулянт Ex: land shark спекулянт земельными участками 5> ам. студ. жарг. блестящий знаток (чего л.) Ex: to be a shark at maths отличаться по математике; в… …   Новый большой англо-русский словарь

  • Shark — Shark, v. i. [imp. & p. p. {Sharked}; p. pr. & vb. n. {Sharking}.] 1. To play the petty thief; to practice fraud or trickery; to swindle. [1913 Webster] Neither sharks for a cup or a reckoning. Bp. Earle. [1913 Webster] 2. To live by shifts and… …   The Collaborative International Dictionary of English

  • Shark — es una serie de televisión estadounidense basada en la vida de un prestigioso y carismático jurista de Los Ángeles que cambia su trabajo como polémico abogado defensor por un puesto en la Fiscalía. El protagonista es Sebastian Stark, encarnado… …   Wikipedia Español

  • shark — 1. noun 1) акула 2) вымогатель; мошенник; шулер 3) amer.; sl. блестя щий знаток (чего л.) 2. v. 1) пожирать 2) мошенничать; вымогать …   Англо-русский словарь Мюллера

  • Shark — Taxobox name = Shark fossil range = Late Devonian Recent image width = 250px image caption = Grey reef shark, Carcharhinus amblyrhynchos regnum = Animalia phylum = Chordata subphylum = Vertebrata classis = Chondrichthyes subclassis =… …   Wikipedia

  • shark — shark1 sharklike, adj. /shahrk/, n. any of a group of elongate elasmobranch, mostly marine fishes, certain species of which are large, voracious, and sometimes dangerous to humans. [1560 70; orig. uncert.] shark2 /shahrk/, n. 1. a person who… …   Universalium

Фильмы

  • The Maldives., 1978 — Annotation: On the tenth anniversary of the Maldives Republic. A report around the streets of the capital - the city of Male, life and way of live of the Maldives inhabitants. Film description…