SHARK_(cipher) SHARK_(cipher)

SHARK (cipher) - Definition and Overview
Related Words: Greek, X, Add, Allegory, Argot, Autograph, Bit, Break, Calculate, Cant, Cast, Character, Code

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 SPN network which alternates a key mixing stage with linear and non-linear transformation layers. The linear transformation is derived from an error correcting code (a Reed-Solomon code) in order to guarantee good diffusion. The nonlinear layer is composed of eight 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 a interpolation attack (Jakobsen and Knudsen, 1997).

See also

References

  • Joan Daemen, Vincent Rijmen: The Design of Rijndael: AES - The Advanced Encryption Standard. Springer 2002, ISBN 3540425802.
  • Thomas Jakobsen, Lars R. Knudsen: The Interpolation Attack on Block Ciphers. Fast Software Encryption 1997: 28–40
  • Vincent Rijmen, Joan Daemen, Bart Preneel, Anton Bossalaers, Erik De Win: The Cipher SHARK. Fast Software Encryption 1996: 99–111

External links


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Example Usage of (cipher)
LesIzmore: @inkkcmag SOUL PROVIDERS CIPHER #1 http://www.vimeo.com/7973521 with @LesIzmore,Young Storm & Hozey T http://twitpic.com/s113k
Ren1421: I was just asked to be in a poets cipher, I would but there are not many poets tweeting... unless the skipping me
Dcupid723: @KinGLoSo40 I was laughin too hard he wud have been like y u laughin n started a cipher rite n front the escalators
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