Leviathan (cryptography)

See also: Léviathan

LEVIATHAN is an algorithm of Chiffrement of flow subjected to the project NESSIE by Scott Fluhrer and David McGrew. It is about an “accessible” coding of flow ( seekable stream cipher ), which means that the user can effectively advance until any of the parts of the key of coding, like the mode of operation CTR or the Salsa20; but contrary to these methods of coding, LEVIATHAN generates in a particularly effective way the continuous blocks constituting the key thanks to the structure out of tree of the generation of flow of the bits of the aforementioned key.

For as much, LEVIATHAN is not regarded as sure, considering attacks against this procedure ( distinguishing attacks ) require 2³⁶ Octet S of data or an equivalent step.

LEVIATHAN requires 11 cycles per byte on a Microprocesseur Pentium II.

External bonds

• Specification of LEVIATHAN (file ZIP)

References

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