FISH (cipher)

Encyclopedia : F : FI : FIS : FISH (cipher)

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For the British code-word for World War II German stream cipher teleprinter secure communications devices, see Fish (cryptography).

The FISH (FIbonacci SHrinking) stream cipher is a fast software based stream cipher using Lagged Fibonacci generators, plus a concept from the shrinking generator cipher. It was published by Siemens in 1993. FISH is quite fast in software and has a huge key length. However, in the same paper where he proposed Pike, Ross Anderson showed that FISH can be broken with just a few thousand bits of known plaintext.

References

• Uwe Blöcher and Markus Dichtl, Fish: A Fast Software Stream Cipher, Fast Software Encryption 1993, pp41–44.
• Ross J. Anderson, On Fibonacci Keystream Generators, Fast Software Encryption 1994, pp346–352.

Stream ciphers [edit]

Algorithms: A5/1 | A5/2 | FISH | Grain | HC-256 | ISAAC | MUGI | Panama | Phelix | Pike | Py | Rabbit | RC4 | Salsa20 | Scream | SEAL | SOBER | SOBER-128 | SOSEMANUK | Trivium | VEST | WAKE

Theory: Shift register | LFSR | NLFSR | Shrinking generator

Misc: eSTREAM

 

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